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authorLinus Torvalds <torvalds@linux-foundation.org>2012-05-21 13:03:46 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-21 13:03:46 -0400
commitcb62ab71fe2b16e8203a0f0a2ef4eda23d761338 (patch)
tree536ba39658e47d511a489c52f7aac60cd78967e5 /net/decnet/dn_route.c
parent31ed8e6f93a27304c9e157dab0267772cd94eaad (diff)
parent74863948f925d9f3bb4e3d3a783e49e9c662d839 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking changes from David Miller: 1) Get rid of the error prone NLA_PUT*() macros that used an embedded goto. 2) Kill off the token-ring and MCA networking drivers, from Paul Gortmaker. 3) Reduce high-order allocations made by datagram AF_UNIX sockets, from Eric Dumazet. 4) Add PTP hardware clock support to IGB and IXGBE, from Richard Cochran and Jacob Keller. 5) Allow users to query timestamping capabilities of a card via ethtool, from Richard Cochran. 6) Add loadbalance mode to the teaming driver, from Jiri Pirko. Part of this is that we can now have BPF filters not attached to sockets, and the loadbalancing function is calculated using one. 7) Francois Romieu went through the network drivers removing gratuitous uses of netdev->base_addr, perhaps some day we can remove it completely but it's used for ISA probing still. 8) Add a BPF JIT for sparc. I know, who cares, right? :-) 9) Move networking sysctl registry away from using the compatability mode interfaces in the sysctl code. From Eric W Biederman. 10) Pavel Emelyanov added a way to save and restore TCP socket state via TCP_REPAIR, TCP_REPAIR_QUEUE, and TCP_QUEUE_SEQ socket options as well as a way to forcefully bind a socket to a port via the sk->sk_reuse value SK_FORCE_REUSE. There is also a TCP_REPAIR_OPTIONS which allows to reinstante the TCP options enabled on the connection. 11) Several enhancements from Eric Dumazet that, in particular, can enhance splice performance on TCP sockets significantly. a) Reset the offset of the per-socket sendmsg page when we know we're the only use of the page in linear_to_page(). b) Add facilities such that skb->data can be backed a page rather than SLAB kmalloc'd memory. In particular devices which were receiving into linear RX buffers can now end up providing paged data. The big result is that code like splice and GRO do not have to copy any more. 12) Allow a pure sender to more gracefully handle ACK backlogs in TCP. What can happen at high rates is that the sender hasn't grown his receive buffer limits at all (he's not receiving data so really doesn't need to), but the non-data ACKs consume receive buffer space. sk_add_backlog() is too aggressive in dropping frames in this case, so relax it's requirements by using the receive buffer plus the send buffer limit as the backlog limit instead of just the former. Also from Eric Dumazet. 13) Add ipv6 support to L2TP, from Benjamin LaHaise, James Chapman, and Chris Elston. 14) Implement TCP early retransmit (RFC 5827), from Yuchung Cheng. Basically, we can start fast retransmit before hiting the dupack threshold under certain conditions. 15) New CODEL active queue management packet scheduler, from Eric Dumazet based upon initial work by Dave Taht. Basically, the big feature is that packets are dropped (or ECN bits are set) based upon how long packets live in the queue, rather than the queue length (which is what RED uses). * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1341 commits) drivers/net/stmmac: seq_file fix memory leak ipv6/exthdrs: strict Pad1 and PadN check USB: qmi_wwan: Add ZTE (Vodafone) K3520-Z USB: qmi_wwan: Add ZTE (Vodafone) K3765-Z USB: qmi_wwan: Make forced int 4 whitelist generic net/ipv4: replace simple_strtoul with kstrtoul net/ipv4/ipconfig: neaten __setup placement net: qmi_wwan: Add Vodafone/Huawei K5005 support net: cdc_ether: Add ZTE WWAN matches before generic Ethernet ipv6: use skb coalescing in reassembly ipv4: use skb coalescing in defragmentation net: introduce skb_try_coalesce() net:ipv6:fixed space issues relating to operators. net:ipv6:fixed a trailing white space issue. ipv6: disable GSO on sockets hitting dst_allfrag tg3: use netdev_alloc_frag() API net: napi_frags_skb() is static ppp: avoid false drop_monitor false positives ipv6: bool/const conversions phase2 ipx: Remove spurious NULL checking in ipx_ioctl(). ...
Diffstat (limited to 'net/decnet/dn_route.c')
-rw-r--r--net/decnet/dn_route.c33
1 files changed, 14 insertions, 19 deletions
diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index 80a3de4906d3..586302e557ad 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -122,7 +122,7 @@ static int dn_route_input(struct sk_buff *);
122static void dn_run_flush(unsigned long dummy); 122static void dn_run_flush(unsigned long dummy);
123 123
124static struct dn_rt_hash_bucket *dn_rt_hash_table; 124static struct dn_rt_hash_bucket *dn_rt_hash_table;
125static unsigned dn_rt_hash_mask; 125static unsigned int dn_rt_hash_mask;
126 126
127static struct timer_list dn_route_timer; 127static struct timer_list dn_route_timer;
128static DEFINE_TIMER(dn_rt_flush_timer, dn_run_flush, 0, 0); 128static DEFINE_TIMER(dn_rt_flush_timer, dn_run_flush, 0, 0);
@@ -149,13 +149,13 @@ static void dn_dst_destroy(struct dst_entry *dst)
149 dst_destroy_metrics_generic(dst); 149 dst_destroy_metrics_generic(dst);
150} 150}
151 151
152static __inline__ unsigned dn_hash(__le16 src, __le16 dst) 152static __inline__ unsigned int dn_hash(__le16 src, __le16 dst)
153{ 153{
154 __u16 tmp = (__u16 __force)(src ^ dst); 154 __u16 tmp = (__u16 __force)(src ^ dst);
155 tmp ^= (tmp >> 3); 155 tmp ^= (tmp >> 3);
156 tmp ^= (tmp >> 5); 156 tmp ^= (tmp >> 5);
157 tmp ^= (tmp >> 10); 157 tmp ^= (tmp >> 10);
158 return dn_rt_hash_mask & (unsigned)tmp; 158 return dn_rt_hash_mask & (unsigned int)tmp;
159} 159}
160 160
161static inline void dnrt_free(struct dn_route *rt) 161static inline void dnrt_free(struct dn_route *rt)
@@ -297,7 +297,7 @@ static inline int compare_keys(struct flowidn *fl1, struct flowidn *fl2)
297 (fl1->flowidn_iif ^ fl2->flowidn_iif)) == 0; 297 (fl1->flowidn_iif ^ fl2->flowidn_iif)) == 0;
298} 298}
299 299
300static int dn_insert_route(struct dn_route *rt, unsigned hash, struct dn_route **rp) 300static int dn_insert_route(struct dn_route *rt, unsigned int hash, struct dn_route **rp)
301{ 301{
302 struct dn_route *rth; 302 struct dn_route *rth;
303 struct dn_route __rcu **rthp; 303 struct dn_route __rcu **rthp;
@@ -748,8 +748,7 @@ static int dn_output(struct sk_buff *skb)
748 dn_to_neigh_output); 748 dn_to_neigh_output);
749 749
750error: 750error:
751 if (net_ratelimit()) 751 net_dbg_ratelimited("dn_output: This should not happen\n");
752 printk(KERN_DEBUG "dn_output: This should not happen\n");
753 752
754 kfree_skb(skb); 753 kfree_skb(skb);
755 754
@@ -807,12 +806,10 @@ drop:
807 */ 806 */
808static int dn_rt_bug(struct sk_buff *skb) 807static int dn_rt_bug(struct sk_buff *skb)
809{ 808{
810 if (net_ratelimit()) { 809 struct dn_skb_cb *cb = DN_SKB_CB(skb);
811 struct dn_skb_cb *cb = DN_SKB_CB(skb);
812 810
813 printk(KERN_DEBUG "dn_rt_bug: skb from:%04x to:%04x\n", 811 net_dbg_ratelimited("dn_rt_bug: skb from:%04x to:%04x\n",
814 le16_to_cpu(cb->src), le16_to_cpu(cb->dst)); 812 le16_to_cpu(cb->src), le16_to_cpu(cb->dst));
815 }
816 813
817 kfree_skb(skb); 814 kfree_skb(skb);
818 815
@@ -934,8 +931,8 @@ static int dn_route_output_slow(struct dst_entry **pprt, const struct flowidn *o
934 struct dn_route *rt = NULL; 931 struct dn_route *rt = NULL;
935 struct net_device *dev_out = NULL, *dev; 932 struct net_device *dev_out = NULL, *dev;
936 struct neighbour *neigh = NULL; 933 struct neighbour *neigh = NULL;
937 unsigned hash; 934 unsigned int hash;
938 unsigned flags = 0; 935 unsigned int flags = 0;
939 struct dn_fib_res res = { .fi = NULL, .type = RTN_UNICAST }; 936 struct dn_fib_res res = { .fi = NULL, .type = RTN_UNICAST };
940 int err; 937 int err;
941 int free_res = 0; 938 int free_res = 0;
@@ -1209,7 +1206,7 @@ e_neighbour:
1209 */ 1206 */
1210static int __dn_route_output_key(struct dst_entry **pprt, const struct flowidn *flp, int flags) 1207static int __dn_route_output_key(struct dst_entry **pprt, const struct flowidn *flp, int flags)
1211{ 1208{
1212 unsigned hash = dn_hash(flp->saddr, flp->daddr); 1209 unsigned int hash = dn_hash(flp->saddr, flp->daddr);
1213 struct dn_route *rt = NULL; 1210 struct dn_route *rt = NULL;
1214 1211
1215 if (!(flags & MSG_TRYHARD)) { 1212 if (!(flags & MSG_TRYHARD)) {
@@ -1275,7 +1272,7 @@ static int dn_route_input_slow(struct sk_buff *skb)
1275 struct net_device *out_dev = NULL; 1272 struct net_device *out_dev = NULL;
1276 struct dn_dev *dn_db; 1273 struct dn_dev *dn_db;
1277 struct neighbour *neigh = NULL; 1274 struct neighbour *neigh = NULL;
1278 unsigned hash; 1275 unsigned int hash;
1279 int flags = 0; 1276 int flags = 0;
1280 __le16 gateway = 0; 1277 __le16 gateway = 0;
1281 __le16 local_src = 0; 1278 __le16 local_src = 0;
@@ -1327,9 +1324,7 @@ static int dn_route_input_slow(struct sk_buff *skb)
1327 1324
1328 out_dev = DN_FIB_RES_DEV(res); 1325 out_dev = DN_FIB_RES_DEV(res);
1329 if (out_dev == NULL) { 1326 if (out_dev == NULL) {
1330 if (net_ratelimit()) 1327 net_crit_ratelimited("Bug in dn_route_input_slow() No output device\n");
1331 printk(KERN_CRIT "Bug in dn_route_input_slow() "
1332 "No output device\n");
1333 goto e_inval; 1328 goto e_inval;
1334 } 1329 }
1335 dev_hold(out_dev); 1330 dev_hold(out_dev);
@@ -1490,7 +1485,7 @@ static int dn_route_input(struct sk_buff *skb)
1490{ 1485{
1491 struct dn_route *rt; 1486 struct dn_route *rt;
1492 struct dn_skb_cb *cb = DN_SKB_CB(skb); 1487 struct dn_skb_cb *cb = DN_SKB_CB(skb);
1493 unsigned hash = dn_hash(cb->src, cb->dst); 1488 unsigned int hash = dn_hash(cb->src, cb->dst);
1494 1489
1495 if (skb_dst(skb)) 1490 if (skb_dst(skb))
1496 return 0; 1491 return 0;