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-rw-r--r--include/linux/netdevice.h350
1 files changed, 290 insertions, 60 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 812a5f3c2abe..fa8b47637997 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -28,6 +28,7 @@
28#include <linux/if.h> 28#include <linux/if.h>
29#include <linux/if_ether.h> 29#include <linux/if_ether.h>
30#include <linux/if_packet.h> 30#include <linux/if_packet.h>
31#include <linux/if_link.h>
31 32
32#ifdef __KERNEL__ 33#ifdef __KERNEL__
33#include <linux/timer.h> 34#include <linux/timer.h>
@@ -63,30 +64,69 @@ struct wireless_dev;
63#define HAVE_FREE_NETDEV /* free_netdev() */ 64#define HAVE_FREE_NETDEV /* free_netdev() */
64#define HAVE_NETDEV_PRIV /* netdev_priv() */ 65#define HAVE_NETDEV_PRIV /* netdev_priv() */
65 66
66#define NET_XMIT_SUCCESS 0
67#define NET_XMIT_DROP 1 /* skb dropped */
68#define NET_XMIT_CN 2 /* congestion notification */
69#define NET_XMIT_POLICED 3 /* skb is shot by police */
70#define NET_XMIT_MASK 0xFFFF /* qdisc flags in net/sch_generic.h */
71
72/* Backlog congestion levels */ 67/* Backlog congestion levels */
73#define NET_RX_SUCCESS 0 /* keep 'em coming, baby */ 68#define NET_RX_SUCCESS 0 /* keep 'em coming, baby */
74#define NET_RX_DROP 1 /* packet dropped */ 69#define NET_RX_DROP 1 /* packet dropped */
70
71/*
72 * Transmit return codes: transmit return codes originate from three different
73 * namespaces:
74 *
75 * - qdisc return codes
76 * - driver transmit return codes
77 * - errno values
78 *
79 * Drivers are allowed to return any one of those in their hard_start_xmit()
80 * function. Real network devices commonly used with qdiscs should only return
81 * the driver transmit return codes though - when qdiscs are used, the actual
82 * transmission happens asynchronously, so the value is not propagated to
83 * higher layers. Virtual network devices transmit synchronously, in this case
84 * the driver transmit return codes are consumed by dev_queue_xmit(), all
85 * others are propagated to higher layers.
86 */
87
88/* qdisc ->enqueue() return codes. */
89#define NET_XMIT_SUCCESS 0x00
90#define NET_XMIT_DROP 0x01 /* skb dropped */
91#define NET_XMIT_CN 0x02 /* congestion notification */
92#define NET_XMIT_POLICED 0x03 /* skb is shot by police */
93#define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */
75 94
76/* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It 95/* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It
77 * indicates that the device will soon be dropping packets, or already drops 96 * indicates that the device will soon be dropping packets, or already drops
78 * some packets of the same priority; prompting us to send less aggressively. */ 97 * some packets of the same priority; prompting us to send less aggressively. */
79#define net_xmit_eval(e) ((e) == NET_XMIT_CN? 0 : (e)) 98#define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e))
80#define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0) 99#define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0)
81 100
82/* Driver transmit return codes */ 101/* Driver transmit return codes */
102#define NETDEV_TX_MASK 0xf0
103
83enum netdev_tx { 104enum netdev_tx {
84 NETDEV_TX_OK = 0, /* driver took care of packet */ 105 __NETDEV_TX_MIN = INT_MIN, /* make sure enum is signed */
85 NETDEV_TX_BUSY, /* driver tx path was busy*/ 106 NETDEV_TX_OK = 0x00, /* driver took care of packet */
86 NETDEV_TX_LOCKED = -1, /* driver tx lock was already taken */ 107 NETDEV_TX_BUSY = 0x10, /* driver tx path was busy*/
108 NETDEV_TX_LOCKED = 0x20, /* driver tx lock was already taken */
87}; 109};
88typedef enum netdev_tx netdev_tx_t; 110typedef enum netdev_tx netdev_tx_t;
89 111
112/*
113 * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant;
114 * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed.
115 */
116static inline bool dev_xmit_complete(int rc)
117{
118 /*
119 * Positive cases with an skb consumed by a driver:
120 * - successful transmission (rc == NETDEV_TX_OK)
121 * - error while transmitting (rc < 0)
122 * - error while queueing to a different device (rc & NET_XMIT_MASK)
123 */
124 if (likely(rc < NET_XMIT_MASK))
125 return true;
126
127 return false;
128}
129
90#endif 130#endif
91 131
92#define MAX_ADDR_LEN 32 /* Largest hardware address length */ 132#define MAX_ADDR_LEN 32 /* Largest hardware address length */
@@ -97,7 +137,7 @@ typedef enum netdev_tx netdev_tx_t;
97 * used. 137 * used.
98 */ 138 */
99 139
100#if defined(CONFIG_WLAN_80211) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE) 140#if defined(CONFIG_WLAN) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
101# if defined(CONFIG_MAC80211_MESH) 141# if defined(CONFIG_MAC80211_MESH)
102# define LL_MAX_HEADER 128 142# define LL_MAX_HEADER 128
103# else 143# else
@@ -125,8 +165,7 @@ typedef enum netdev_tx netdev_tx_t;
125 * with byte counters. 165 * with byte counters.
126 */ 166 */
127 167
128struct net_device_stats 168struct net_device_stats {
129{
130 unsigned long rx_packets; /* total packets received */ 169 unsigned long rx_packets; /* total packets received */
131 unsigned long tx_packets; /* total packets transmitted */ 170 unsigned long tx_packets; /* total packets transmitted */
132 unsigned long rx_bytes; /* total bytes received */ 171 unsigned long rx_bytes; /* total bytes received */
@@ -179,8 +218,7 @@ struct neighbour;
179struct neigh_parms; 218struct neigh_parms;
180struct sk_buff; 219struct sk_buff;
181 220
182struct netif_rx_stats 221struct netif_rx_stats {
183{
184 unsigned total; 222 unsigned total;
185 unsigned dropped; 223 unsigned dropped;
186 unsigned time_squeeze; 224 unsigned time_squeeze;
@@ -189,8 +227,7 @@ struct netif_rx_stats
189 227
190DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat); 228DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat);
191 229
192struct dev_addr_list 230struct dev_addr_list {
193{
194 struct dev_addr_list *next; 231 struct dev_addr_list *next;
195 u8 da_addr[MAX_ADDR_LEN]; 232 u8 da_addr[MAX_ADDR_LEN];
196 u8 da_addrlen; 233 u8 da_addrlen;
@@ -227,8 +264,18 @@ struct netdev_hw_addr_list {
227 int count; 264 int count;
228}; 265};
229 266
230struct hh_cache 267#define netdev_uc_count(dev) ((dev)->uc.count)
231{ 268#define netdev_uc_empty(dev) ((dev)->uc.count == 0)
269#define netdev_for_each_uc_addr(ha, dev) \
270 list_for_each_entry(ha, &dev->uc.list, list)
271
272#define netdev_mc_count(dev) ((dev)->mc_count)
273#define netdev_mc_empty(dev) (netdev_mc_count(dev) == 0)
274
275#define netdev_for_each_mc_addr(mclist, dev) \
276 for (mclist = dev->mc_list; mclist; mclist = mclist->next)
277
278struct hh_cache {
232 struct hh_cache *hh_next; /* Next entry */ 279 struct hh_cache *hh_next; /* Next entry */
233 atomic_t hh_refcnt; /* number of users */ 280 atomic_t hh_refcnt; /* number of users */
234/* 281/*
@@ -291,8 +338,7 @@ struct header_ops {
291 * code. 338 * code.
292 */ 339 */
293 340
294enum netdev_state_t 341enum netdev_state_t {
295{
296 __LINK_STATE_START, 342 __LINK_STATE_START,
297 __LINK_STATE_PRESENT, 343 __LINK_STATE_PRESENT,
298 __LINK_STATE_NOCARRIER, 344 __LINK_STATE_NOCARRIER,
@@ -341,20 +387,20 @@ struct napi_struct {
341 struct sk_buff *skb; 387 struct sk_buff *skb;
342}; 388};
343 389
344enum 390enum {
345{
346 NAPI_STATE_SCHED, /* Poll is scheduled */ 391 NAPI_STATE_SCHED, /* Poll is scheduled */
347 NAPI_STATE_DISABLE, /* Disable pending */ 392 NAPI_STATE_DISABLE, /* Disable pending */
348 NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */ 393 NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */
349}; 394};
350 395
351enum { 396enum gro_result {
352 GRO_MERGED, 397 GRO_MERGED,
353 GRO_MERGED_FREE, 398 GRO_MERGED_FREE,
354 GRO_HELD, 399 GRO_HELD,
355 GRO_NORMAL, 400 GRO_NORMAL,
356 GRO_DROP, 401 GRO_DROP,
357}; 402};
403typedef enum gro_result gro_result_t;
358 404
359extern void __napi_schedule(struct napi_struct *n); 405extern void __napi_schedule(struct napi_struct *n);
360 406
@@ -457,8 +503,7 @@ static inline void napi_synchronize(const struct napi_struct *n)
457# define napi_synchronize(n) barrier() 503# define napi_synchronize(n) barrier()
458#endif 504#endif
459 505
460enum netdev_queue_state_t 506enum netdev_queue_state_t {
461{
462 __QUEUE_STATE_XOFF, 507 __QUEUE_STATE_XOFF,
463 __QUEUE_STATE_FROZEN, 508 __QUEUE_STATE_FROZEN,
464}; 509};
@@ -577,6 +622,13 @@ struct netdev_queue {
577 * this function is called when a VLAN id is unregistered. 622 * this function is called when a VLAN id is unregistered.
578 * 623 *
579 * void (*ndo_poll_controller)(struct net_device *dev); 624 * void (*ndo_poll_controller)(struct net_device *dev);
625 *
626 * SR-IOV management functions.
627 * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac);
628 * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, u8 qos);
629 * int (*ndo_set_vf_tx_rate)(struct net_device *dev, int vf, int rate);
630 * int (*ndo_get_vf_config)(struct net_device *dev,
631 * int vf, struct ifla_vf_info *ivf);
580 */ 632 */
581#define HAVE_NET_DEVICE_OPS 633#define HAVE_NET_DEVICE_OPS
582struct net_device_ops { 634struct net_device_ops {
@@ -588,30 +640,21 @@ struct net_device_ops {
588 struct net_device *dev); 640 struct net_device *dev);
589 u16 (*ndo_select_queue)(struct net_device *dev, 641 u16 (*ndo_select_queue)(struct net_device *dev,
590 struct sk_buff *skb); 642 struct sk_buff *skb);
591#define HAVE_CHANGE_RX_FLAGS
592 void (*ndo_change_rx_flags)(struct net_device *dev, 643 void (*ndo_change_rx_flags)(struct net_device *dev,
593 int flags); 644 int flags);
594#define HAVE_SET_RX_MODE
595 void (*ndo_set_rx_mode)(struct net_device *dev); 645 void (*ndo_set_rx_mode)(struct net_device *dev);
596#define HAVE_MULTICAST
597 void (*ndo_set_multicast_list)(struct net_device *dev); 646 void (*ndo_set_multicast_list)(struct net_device *dev);
598#define HAVE_SET_MAC_ADDR
599 int (*ndo_set_mac_address)(struct net_device *dev, 647 int (*ndo_set_mac_address)(struct net_device *dev,
600 void *addr); 648 void *addr);
601#define HAVE_VALIDATE_ADDR
602 int (*ndo_validate_addr)(struct net_device *dev); 649 int (*ndo_validate_addr)(struct net_device *dev);
603#define HAVE_PRIVATE_IOCTL
604 int (*ndo_do_ioctl)(struct net_device *dev, 650 int (*ndo_do_ioctl)(struct net_device *dev,
605 struct ifreq *ifr, int cmd); 651 struct ifreq *ifr, int cmd);
606#define HAVE_SET_CONFIG
607 int (*ndo_set_config)(struct net_device *dev, 652 int (*ndo_set_config)(struct net_device *dev,
608 struct ifmap *map); 653 struct ifmap *map);
609#define HAVE_CHANGE_MTU
610 int (*ndo_change_mtu)(struct net_device *dev, 654 int (*ndo_change_mtu)(struct net_device *dev,
611 int new_mtu); 655 int new_mtu);
612 int (*ndo_neigh_setup)(struct net_device *dev, 656 int (*ndo_neigh_setup)(struct net_device *dev,
613 struct neigh_parms *); 657 struct neigh_parms *);
614#define HAVE_TX_TIMEOUT
615 void (*ndo_tx_timeout) (struct net_device *dev); 658 void (*ndo_tx_timeout) (struct net_device *dev);
616 659
617 struct net_device_stats* (*ndo_get_stats)(struct net_device *dev); 660 struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
@@ -623,9 +666,17 @@ struct net_device_ops {
623 void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, 666 void (*ndo_vlan_rx_kill_vid)(struct net_device *dev,
624 unsigned short vid); 667 unsigned short vid);
625#ifdef CONFIG_NET_POLL_CONTROLLER 668#ifdef CONFIG_NET_POLL_CONTROLLER
626#define HAVE_NETDEV_POLL
627 void (*ndo_poll_controller)(struct net_device *dev); 669 void (*ndo_poll_controller)(struct net_device *dev);
628#endif 670#endif
671 int (*ndo_set_vf_mac)(struct net_device *dev,
672 int queue, u8 *mac);
673 int (*ndo_set_vf_vlan)(struct net_device *dev,
674 int queue, u16 vlan, u8 qos);
675 int (*ndo_set_vf_tx_rate)(struct net_device *dev,
676 int vf, int rate);
677 int (*ndo_get_vf_config)(struct net_device *dev,
678 int vf,
679 struct ifla_vf_info *ivf);
629#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 680#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
630 int (*ndo_fcoe_enable)(struct net_device *dev); 681 int (*ndo_fcoe_enable)(struct net_device *dev);
631 int (*ndo_fcoe_disable)(struct net_device *dev); 682 int (*ndo_fcoe_disable)(struct net_device *dev);
@@ -635,6 +686,10 @@ struct net_device_ops {
635 unsigned int sgc); 686 unsigned int sgc);
636 int (*ndo_fcoe_ddp_done)(struct net_device *dev, 687 int (*ndo_fcoe_ddp_done)(struct net_device *dev,
637 u16 xid); 688 u16 xid);
689#define NETDEV_FCOE_WWNN 0
690#define NETDEV_FCOE_WWPN 1
691 int (*ndo_fcoe_get_wwn)(struct net_device *dev,
692 u64 *wwn, int type);
638#endif 693#endif
639}; 694};
640 695
@@ -648,8 +703,7 @@ struct net_device_ops {
648 * moves out. 703 * moves out.
649 */ 704 */
650 705
651struct net_device 706struct net_device {
652{
653 707
654 /* 708 /*
655 * This is the first field of the "visible" part of this structure 709 * This is the first field of the "visible" part of this structure
@@ -683,6 +737,7 @@ struct net_device
683 737
684 struct list_head dev_list; 738 struct list_head dev_list;
685 struct list_head napi_list; 739 struct list_head napi_list;
740 struct list_head unreg_list;
686 741
687 /* Net device features */ 742 /* Net device features */
688 unsigned long features; 743 unsigned long features;
@@ -708,6 +763,7 @@ struct net_device
708#define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */ 763#define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */
709#define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */ 764#define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */
710#define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/ 765#define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/
766#define NETIF_F_NTUPLE (1 << 27) /* N-tuple filters supported */
711 767
712 /* Segmentation offload features */ 768 /* Segmentation offload features */
713#define NETIF_F_GSO_SHIFT 16 769#define NETIF_F_GSO_SHIFT 16
@@ -859,7 +915,7 @@ struct net_device
859 /* device index hash chain */ 915 /* device index hash chain */
860 struct hlist_node index_hlist; 916 struct hlist_node index_hlist;
861 917
862 struct net_device *link_watch_next; 918 struct list_head link_watch_list;
863 919
864 /* register/unregister state machine */ 920 /* register/unregister state machine */
865 enum { NETREG_UNINITIALIZED=0, 921 enum { NETREG_UNINITIALIZED=0,
@@ -868,7 +924,12 @@ struct net_device
868 NETREG_UNREGISTERED, /* completed unregister todo */ 924 NETREG_UNREGISTERED, /* completed unregister todo */
869 NETREG_RELEASED, /* called free_netdev */ 925 NETREG_RELEASED, /* called free_netdev */
870 NETREG_DUMMY, /* dummy device for NAPI poll */ 926 NETREG_DUMMY, /* dummy device for NAPI poll */
871 } reg_state; 927 } reg_state:16;
928
929 enum {
930 RTNL_LINK_INITIALIZED,
931 RTNL_LINK_INITIALIZING,
932 } rtnl_link_state:16;
872 933
873 /* Called from unregister, can be used to call free_netdev */ 934 /* Called from unregister, can be used to call free_netdev */
874 void (*destructor)(struct net_device *dev); 935 void (*destructor)(struct net_device *dev);
@@ -894,8 +955,8 @@ struct net_device
894 955
895 /* class/net/name entry */ 956 /* class/net/name entry */
896 struct device dev; 957 struct device dev;
897 /* space for optional statistics and wireless sysfs groups */ 958 /* space for optional device, statistics, and wireless sysfs groups */
898 const struct attribute_group *sysfs_groups[3]; 959 const struct attribute_group *sysfs_groups[4];
899 960
900 /* rtnetlink link ops */ 961 /* rtnetlink link ops */
901 const struct rtnl_link_ops *rtnl_link_ops; 962 const struct rtnl_link_ops *rtnl_link_ops;
@@ -909,13 +970,15 @@ struct net_device
909 970
910#ifdef CONFIG_DCB 971#ifdef CONFIG_DCB
911 /* Data Center Bridging netlink ops */ 972 /* Data Center Bridging netlink ops */
912 struct dcbnl_rtnl_ops *dcbnl_ops; 973 const struct dcbnl_rtnl_ops *dcbnl_ops;
913#endif 974#endif
914 975
915#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) 976#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
916 /* max exchange id for FCoE LRO by ddp */ 977 /* max exchange id for FCoE LRO by ddp */
917 unsigned int fcoe_ddp_xid; 978 unsigned int fcoe_ddp_xid;
918#endif 979#endif
980 /* n-tuple filter list attached to this device */
981 struct ethtool_rx_ntuple_list ethtool_ntuple_list;
919}; 982};
920#define to_net_dev(d) container_of(d, struct net_device, dev) 983#define to_net_dev(d) container_of(d, struct net_device, dev)
921 984
@@ -972,6 +1035,15 @@ static inline bool netdev_uses_dsa_tags(struct net_device *dev)
972 return 0; 1035 return 0;
973} 1036}
974 1037
1038#ifndef CONFIG_NET_NS
1039static inline void skb_set_dev(struct sk_buff *skb, struct net_device *dev)
1040{
1041 skb->dev = dev;
1042}
1043#else /* CONFIG_NET_NS */
1044void skb_set_dev(struct sk_buff *skb, struct net_device *dev);
1045#endif
1046
975static inline bool netdev_uses_trailer_tags(struct net_device *dev) 1047static inline bool netdev_uses_trailer_tags(struct net_device *dev)
976{ 1048{
977#ifdef CONFIG_NET_DSA_TAG_TRAILER 1049#ifdef CONFIG_NET_DSA_TAG_TRAILER
@@ -1075,10 +1147,16 @@ extern rwlock_t dev_base_lock; /* Device list lock */
1075 1147
1076#define for_each_netdev(net, d) \ 1148#define for_each_netdev(net, d) \
1077 list_for_each_entry(d, &(net)->dev_base_head, dev_list) 1149 list_for_each_entry(d, &(net)->dev_base_head, dev_list)
1150#define for_each_netdev_reverse(net, d) \
1151 list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list)
1152#define for_each_netdev_rcu(net, d) \
1153 list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list)
1078#define for_each_netdev_safe(net, d, n) \ 1154#define for_each_netdev_safe(net, d, n) \
1079 list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list) 1155 list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list)
1080#define for_each_netdev_continue(net, d) \ 1156#define for_each_netdev_continue(net, d) \
1081 list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list) 1157 list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list)
1158#define for_each_netdev_continue_rcu(net, d) \
1159 list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list)
1082#define net_device_entry(lh) list_entry(lh, struct net_device, dev_list) 1160#define net_device_entry(lh) list_entry(lh, struct net_device, dev_list)
1083 1161
1084static inline struct net_device *next_net_device(struct net_device *dev) 1162static inline struct net_device *next_net_device(struct net_device *dev)
@@ -1091,6 +1169,16 @@ static inline struct net_device *next_net_device(struct net_device *dev)
1091 return lh == &net->dev_base_head ? NULL : net_device_entry(lh); 1169 return lh == &net->dev_base_head ? NULL : net_device_entry(lh);
1092} 1170}
1093 1171
1172static inline struct net_device *next_net_device_rcu(struct net_device *dev)
1173{
1174 struct list_head *lh;
1175 struct net *net;
1176
1177 net = dev_net(dev);
1178 lh = rcu_dereference(dev->dev_list.next);
1179 return lh == &net->dev_base_head ? NULL : net_device_entry(lh);
1180}
1181
1094static inline struct net_device *first_net_device(struct net *net) 1182static inline struct net_device *first_net_device(struct net *net)
1095{ 1183{
1096 return list_empty(&net->dev_base_head) ? NULL : 1184 return list_empty(&net->dev_base_head) ? NULL :
@@ -1109,6 +1197,7 @@ extern void __dev_remove_pack(struct packet_type *pt);
1109extern struct net_device *dev_get_by_flags(struct net *net, unsigned short flags, 1197extern struct net_device *dev_get_by_flags(struct net *net, unsigned short flags,
1110 unsigned short mask); 1198 unsigned short mask);
1111extern struct net_device *dev_get_by_name(struct net *net, const char *name); 1199extern struct net_device *dev_get_by_name(struct net *net, const char *name);
1200extern struct net_device *dev_get_by_name_rcu(struct net *net, const char *name);
1112extern struct net_device *__dev_get_by_name(struct net *net, const char *name); 1201extern struct net_device *__dev_get_by_name(struct net *net, const char *name);
1113extern int dev_alloc_name(struct net_device *dev, const char *name); 1202extern int dev_alloc_name(struct net_device *dev, const char *name);
1114extern int dev_open(struct net_device *dev); 1203extern int dev_open(struct net_device *dev);
@@ -1116,7 +1205,14 @@ extern int dev_close(struct net_device *dev);
1116extern void dev_disable_lro(struct net_device *dev); 1205extern void dev_disable_lro(struct net_device *dev);
1117extern int dev_queue_xmit(struct sk_buff *skb); 1206extern int dev_queue_xmit(struct sk_buff *skb);
1118extern int register_netdevice(struct net_device *dev); 1207extern int register_netdevice(struct net_device *dev);
1119extern void unregister_netdevice(struct net_device *dev); 1208extern void unregister_netdevice_queue(struct net_device *dev,
1209 struct list_head *head);
1210extern void unregister_netdevice_many(struct list_head *head);
1211static inline void unregister_netdevice(struct net_device *dev)
1212{
1213 unregister_netdevice_queue(dev, NULL);
1214}
1215
1120extern void free_netdev(struct net_device *dev); 1216extern void free_netdev(struct net_device *dev);
1121extern void synchronize_net(void); 1217extern void synchronize_net(void);
1122extern int register_netdevice_notifier(struct notifier_block *nb); 1218extern int register_netdevice_notifier(struct notifier_block *nb);
@@ -1127,6 +1223,7 @@ extern void netdev_resync_ops(struct net_device *dev);
1127extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev); 1223extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev);
1128extern struct net_device *dev_get_by_index(struct net *net, int ifindex); 1224extern struct net_device *dev_get_by_index(struct net *net, int ifindex);
1129extern struct net_device *__dev_get_by_index(struct net *net, int ifindex); 1225extern struct net_device *__dev_get_by_index(struct net *net, int ifindex);
1226extern struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex);
1130extern int dev_restart(struct net_device *dev); 1227extern int dev_restart(struct net_device *dev);
1131#ifdef CONFIG_NETPOLL_TRAP 1228#ifdef CONFIG_NETPOLL_TRAP
1132extern int netpoll_trap(void); 1229extern int netpoll_trap(void);
@@ -1212,8 +1309,7 @@ static inline int unregister_gifconf(unsigned int family)
1212 * Incoming packets are placed on per-cpu queues so that 1309 * Incoming packets are placed on per-cpu queues so that
1213 * no locking is needed. 1310 * no locking is needed.
1214 */ 1311 */
1215struct softnet_data 1312struct softnet_data {
1216{
1217 struct Qdisc *output_queue; 1313 struct Qdisc *output_queue;
1218 struct sk_buff_head input_pkt_queue; 1314 struct sk_buff_head input_pkt_queue;
1219 struct list_head poll_list; 1315 struct list_head poll_list;
@@ -1466,19 +1562,19 @@ extern int netif_rx(struct sk_buff *skb);
1466extern int netif_rx_ni(struct sk_buff *skb); 1562extern int netif_rx_ni(struct sk_buff *skb);
1467#define HAVE_NETIF_RECEIVE_SKB 1 1563#define HAVE_NETIF_RECEIVE_SKB 1
1468extern int netif_receive_skb(struct sk_buff *skb); 1564extern int netif_receive_skb(struct sk_buff *skb);
1469extern void napi_gro_flush(struct napi_struct *napi); 1565extern gro_result_t dev_gro_receive(struct napi_struct *napi,
1470extern int dev_gro_receive(struct napi_struct *napi,
1471 struct sk_buff *skb); 1566 struct sk_buff *skb);
1472extern int napi_skb_finish(int ret, struct sk_buff *skb); 1567extern gro_result_t napi_skb_finish(gro_result_t ret, struct sk_buff *skb);
1473extern int napi_gro_receive(struct napi_struct *napi, 1568extern gro_result_t napi_gro_receive(struct napi_struct *napi,
1474 struct sk_buff *skb); 1569 struct sk_buff *skb);
1475extern void napi_reuse_skb(struct napi_struct *napi, 1570extern void napi_reuse_skb(struct napi_struct *napi,
1476 struct sk_buff *skb); 1571 struct sk_buff *skb);
1477extern struct sk_buff * napi_get_frags(struct napi_struct *napi); 1572extern struct sk_buff * napi_get_frags(struct napi_struct *napi);
1478extern int napi_frags_finish(struct napi_struct *napi, 1573extern gro_result_t napi_frags_finish(struct napi_struct *napi,
1479 struct sk_buff *skb, int ret); 1574 struct sk_buff *skb,
1575 gro_result_t ret);
1480extern struct sk_buff * napi_frags_skb(struct napi_struct *napi); 1576extern struct sk_buff * napi_frags_skb(struct napi_struct *napi);
1481extern int napi_gro_frags(struct napi_struct *napi); 1577extern gro_result_t napi_gro_frags(struct napi_struct *napi);
1482 1578
1483static inline void napi_free_frags(struct napi_struct *napi) 1579static inline void napi_free_frags(struct napi_struct *napi)
1484{ 1580{
@@ -1491,7 +1587,9 @@ extern int dev_valid_name(const char *name);
1491extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *); 1587extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *);
1492extern int dev_ethtool(struct net *net, struct ifreq *); 1588extern int dev_ethtool(struct net *net, struct ifreq *);
1493extern unsigned dev_get_flags(const struct net_device *); 1589extern unsigned dev_get_flags(const struct net_device *);
1590extern int __dev_change_flags(struct net_device *, unsigned int flags);
1494extern int dev_change_flags(struct net_device *, unsigned); 1591extern int dev_change_flags(struct net_device *, unsigned);
1592extern void __dev_notify_flags(struct net_device *, unsigned int old_flags);
1495extern int dev_change_name(struct net_device *, const char *); 1593extern int dev_change_name(struct net_device *, const char *);
1496extern int dev_set_alias(struct net_device *, const char *, size_t); 1594extern int dev_set_alias(struct net_device *, const char *, size_t);
1497extern int dev_change_net_namespace(struct net_device *, 1595extern int dev_change_net_namespace(struct net_device *,
@@ -1502,6 +1600,8 @@ extern int dev_set_mac_address(struct net_device *,
1502extern int dev_hard_start_xmit(struct sk_buff *skb, 1600extern int dev_hard_start_xmit(struct sk_buff *skb,
1503 struct net_device *dev, 1601 struct net_device *dev,
1504 struct netdev_queue *txq); 1602 struct netdev_queue *txq);
1603extern int dev_forward_skb(struct net_device *dev,
1604 struct sk_buff *skb);
1505 1605
1506extern int netdev_budget; 1606extern int netdev_budget;
1507 1607
@@ -1540,6 +1640,7 @@ static inline void dev_hold(struct net_device *dev)
1540 */ 1640 */
1541 1641
1542extern void linkwatch_fire_event(struct net_device *dev); 1642extern void linkwatch_fire_event(struct net_device *dev);
1643extern void linkwatch_forget_dev(struct net_device *dev);
1543 1644
1544/** 1645/**
1545 * netif_carrier_ok - test if carrier present 1646 * netif_carrier_ok - test if carrier present
@@ -1609,7 +1710,8 @@ static inline int netif_dormant(const struct net_device *dev)
1609 * 1710 *
1610 * Check if carrier is operational 1711 * Check if carrier is operational
1611 */ 1712 */
1612static inline int netif_oper_up(const struct net_device *dev) { 1713static inline int netif_oper_up(const struct net_device *dev)
1714{
1613 return (dev->operstate == IF_OPER_UP || 1715 return (dev->operstate == IF_OPER_UP ||
1614 dev->operstate == IF_OPER_UNKNOWN /* backward compat */); 1716 dev->operstate == IF_OPER_UNKNOWN /* backward compat */);
1615} 1717}
@@ -1880,6 +1982,7 @@ extern void netdev_features_change(struct net_device *dev);
1880extern void dev_load(struct net *net, const char *name); 1982extern void dev_load(struct net *net, const char *name);
1881extern void dev_mcast_init(void); 1983extern void dev_mcast_init(void);
1882extern const struct net_device_stats *dev_get_stats(struct net_device *dev); 1984extern const struct net_device_stats *dev_get_stats(struct net_device *dev);
1985extern void dev_txq_stats_fold(const struct net_device *dev, struct net_device_stats *stats);
1883 1986
1884extern int netdev_max_backlog; 1987extern int netdev_max_backlog;
1885extern int weight_p; 1988extern int weight_p;
@@ -1914,6 +2017,9 @@ unsigned long netdev_increment_features(unsigned long all, unsigned long one,
1914 unsigned long mask); 2017 unsigned long mask);
1915unsigned long netdev_fix_features(unsigned long features, const char *name); 2018unsigned long netdev_fix_features(unsigned long features, const char *name);
1916 2019
2020void netif_stacked_transfer_operstate(const struct net_device *rootdev,
2021 struct net_device *dev);
2022
1917static inline int net_gso_ok(int features, int gso_type) 2023static inline int net_gso_ok(int features, int gso_type)
1918{ 2024{
1919 int feature = gso_type << NETIF_F_GSO_SHIFT; 2025 int feature = gso_type << NETIF_F_GSO_SHIFT;
@@ -1953,12 +2059,12 @@ static inline void skb_bond_set_mac_by_master(struct sk_buff *skb,
1953 * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and 2059 * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and
1954 * ARP on active-backup slaves with arp_validate enabled. 2060 * ARP on active-backup slaves with arp_validate enabled.
1955 */ 2061 */
1956static inline int skb_bond_should_drop(struct sk_buff *skb) 2062static inline int skb_bond_should_drop(struct sk_buff *skb,
2063 struct net_device *master)
1957{ 2064{
1958 struct net_device *dev = skb->dev;
1959 struct net_device *master = dev->master;
1960
1961 if (master) { 2065 if (master) {
2066 struct net_device *dev = skb->dev;
2067
1962 if (master->priv_flags & IFF_MASTER_ARPMON) 2068 if (master->priv_flags & IFF_MASTER_ARPMON)
1963 dev->last_rx = jiffies; 2069 dev->last_rx = jiffies;
1964 2070
@@ -2013,6 +2119,130 @@ static inline u32 dev_ethtool_get_flags(struct net_device *dev)
2013 return 0; 2119 return 0;
2014 return dev->ethtool_ops->get_flags(dev); 2120 return dev->ethtool_ops->get_flags(dev);
2015} 2121}
2122
2123/* Logging, debugging and troubleshooting/diagnostic helpers. */
2124
2125/* netdev_printk helpers, similar to dev_printk */
2126
2127static inline const char *netdev_name(const struct net_device *dev)
2128{
2129 if (dev->reg_state != NETREG_REGISTERED)
2130 return "(unregistered net_device)";
2131 return dev->name;
2132}
2133
2134#define netdev_printk(level, netdev, format, args...) \
2135 dev_printk(level, (netdev)->dev.parent, \
2136 "%s: " format, \
2137 netdev_name(netdev), ##args)
2138
2139#define netdev_emerg(dev, format, args...) \
2140 netdev_printk(KERN_EMERG, dev, format, ##args)
2141#define netdev_alert(dev, format, args...) \
2142 netdev_printk(KERN_ALERT, dev, format, ##args)
2143#define netdev_crit(dev, format, args...) \
2144 netdev_printk(KERN_CRIT, dev, format, ##args)
2145#define netdev_err(dev, format, args...) \
2146 netdev_printk(KERN_ERR, dev, format, ##args)
2147#define netdev_warn(dev, format, args...) \
2148 netdev_printk(KERN_WARNING, dev, format, ##args)
2149#define netdev_notice(dev, format, args...) \
2150 netdev_printk(KERN_NOTICE, dev, format, ##args)
2151#define netdev_info(dev, format, args...) \
2152 netdev_printk(KERN_INFO, dev, format, ##args)
2153
2154#if defined(DEBUG)
2155#define netdev_dbg(__dev, format, args...) \
2156 netdev_printk(KERN_DEBUG, __dev, format, ##args)
2157#elif defined(CONFIG_DYNAMIC_DEBUG)
2158#define netdev_dbg(__dev, format, args...) \
2159do { \
2160 dynamic_dev_dbg((__dev)->dev.parent, "%s: " format, \
2161 netdev_name(__dev), ##args); \
2162} while (0)
2163#else
2164#define netdev_dbg(__dev, format, args...) \
2165({ \
2166 if (0) \
2167 netdev_printk(KERN_DEBUG, __dev, format, ##args); \
2168 0; \
2169})
2170#endif
2171
2172#if defined(VERBOSE_DEBUG)
2173#define netdev_vdbg netdev_dbg
2174#else
2175
2176#define netdev_vdbg(dev, format, args...) \
2177({ \
2178 if (0) \
2179 netdev_printk(KERN_DEBUG, dev, format, ##args); \
2180 0; \
2181})
2182#endif
2183
2184/*
2185 * netdev_WARN() acts like dev_printk(), but with the key difference
2186 * of using a WARN/WARN_ON to get the message out, including the
2187 * file/line information and a backtrace.
2188 */
2189#define netdev_WARN(dev, format, args...) \
2190 WARN(1, "netdevice: %s\n" format, netdev_name(dev), ##args);
2191
2192/* netif printk helpers, similar to netdev_printk */
2193
2194#define netif_printk(priv, type, level, dev, fmt, args...) \
2195do { \
2196 if (netif_msg_##type(priv)) \
2197 netdev_printk(level, (dev), fmt, ##args); \
2198} while (0)
2199
2200#define netif_emerg(priv, type, dev, fmt, args...) \
2201 netif_printk(priv, type, KERN_EMERG, dev, fmt, ##args)
2202#define netif_alert(priv, type, dev, fmt, args...) \
2203 netif_printk(priv, type, KERN_ALERT, dev, fmt, ##args)
2204#define netif_crit(priv, type, dev, fmt, args...) \
2205 netif_printk(priv, type, KERN_CRIT, dev, fmt, ##args)
2206#define netif_err(priv, type, dev, fmt, args...) \
2207 netif_printk(priv, type, KERN_ERR, dev, fmt, ##args)
2208#define netif_warn(priv, type, dev, fmt, args...) \
2209 netif_printk(priv, type, KERN_WARNING, dev, fmt, ##args)
2210#define netif_notice(priv, type, dev, fmt, args...) \
2211 netif_printk(priv, type, KERN_NOTICE, dev, fmt, ##args)
2212#define netif_info(priv, type, dev, fmt, args...) \
2213 netif_printk(priv, type, KERN_INFO, (dev), fmt, ##args)
2214
2215#if defined(DEBUG)
2216#define netif_dbg(priv, type, dev, format, args...) \
2217 netif_printk(priv, type, KERN_DEBUG, dev, format, ##args)
2218#elif defined(CONFIG_DYNAMIC_DEBUG)
2219#define netif_dbg(priv, type, netdev, format, args...) \
2220do { \
2221 if (netif_msg_##type(priv)) \
2222 dynamic_dev_dbg((netdev)->dev.parent, \
2223 "%s: " format, \
2224 netdev_name(netdev), ##args); \
2225} while (0)
2226#else
2227#define netif_dbg(priv, type, dev, format, args...) \
2228({ \
2229 if (0) \
2230 netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
2231 0; \
2232})
2233#endif
2234
2235#if defined(VERBOSE_DEBUG)
2236#define netif_vdbg netdev_dbg
2237#else
2238#define netif_vdbg(priv, type, dev, format, args...) \
2239({ \
2240 if (0) \
2241 netif_printk(KERN_DEBUG, dev, format, ##args); \
2242 0; \
2243})
2244#endif
2245
2016#endif /* __KERNEL__ */ 2246#endif /* __KERNEL__ */
2017 2247
2018#endif /* _LINUX_NETDEVICE_H */ 2248#endif /* _LINUX_NETDEVICE_H */
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-17 10:55:34 -0500