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author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-12 17:27:40 -0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-12 17:27:40 -0400 |
commit | f9da455b93f6ba076935b4ef4589f61e529ae046 (patch) | |
tree | 3c4e69ce1ba1d6bf65915b97a76ca2172105b278 /net/ipv4/inetpeer.c | |
parent | 0e04c641b199435f3779454055f6a7de258ecdfc (diff) | |
parent | e5eca6d41f53db48edd8cf88a3f59d2c30227f8e (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
1) Seccomp BPF filters can now be JIT'd, from Alexei Starovoitov.
2) Multiqueue support in xen-netback and xen-netfront, from Andrew J
Benniston.
3) Allow tweaking of aggregation settings in cdc_ncm driver, from Bjørn
Mork.
4) BPF now has a "random" opcode, from Chema Gonzalez.
5) Add more BPF documentation and improve test framework, from Daniel
Borkmann.
6) Support TCP fastopen over ipv6, from Daniel Lee.
7) Add software TSO helper functions and use them to support software
TSO in mvneta and mv643xx_eth drivers. From Ezequiel Garcia.
8) Support software TSO in fec driver too, from Nimrod Andy.
9) Add Broadcom SYSTEMPORT driver, from Florian Fainelli.
10) Handle broadcasts more gracefully over macvlan when there are large
numbers of interfaces configured, from Herbert Xu.
11) Allow more control over fwmark used for non-socket based responses,
from Lorenzo Colitti.
12) Do TCP congestion window limiting based upon measurements, from Neal
Cardwell.
13) Support busy polling in SCTP, from Neal Horman.
14) Allow RSS key to be configured via ethtool, from Venkata Duvvuru.
15) Bridge promisc mode handling improvements from Vlad Yasevich.
16) Don't use inetpeer entries to implement ID generation any more, it
performs poorly, from Eric Dumazet.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1522 commits)
rtnetlink: fix userspace API breakage for iproute2 < v3.9.0
tcp: fixing TLP's FIN recovery
net: fec: Add software TSO support
net: fec: Add Scatter/gather support
net: fec: Increase buffer descriptor entry number
net: fec: Factorize feature setting
net: fec: Enable IP header hardware checksum
net: fec: Factorize the .xmit transmit function
bridge: fix compile error when compiling without IPv6 support
bridge: fix smatch warning / potential null pointer dereference
via-rhine: fix full-duplex with autoneg disable
bnx2x: Enlarge the dorq threshold for VFs
bnx2x: Check for UNDI in uncommon branch
bnx2x: Fix 1G-baseT link
bnx2x: Fix link for KR with swapped polarity lane
sctp: Fix sk_ack_backlog wrap-around problem
net/core: Add VF link state control policy
net/fsl: xgmac_mdio is dependent on OF_MDIO
net/fsl: Make xgmac_mdio read error message useful
net_sched: drr: warn when qdisc is not work conserving
...
Diffstat (limited to 'net/ipv4/inetpeer.c')
-rw-r--r-- | net/ipv4/inetpeer.c | 20 |
1 files changed, 1 insertions, 19 deletions
diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c index 56cd458a1b8c..bd5f5928167d 100644 --- a/net/ipv4/inetpeer.c +++ b/net/ipv4/inetpeer.c | |||
@@ -26,20 +26,7 @@ | |||
26 | * Theory of operations. | 26 | * Theory of operations. |
27 | * We keep one entry for each peer IP address. The nodes contains long-living | 27 | * We keep one entry for each peer IP address. The nodes contains long-living |
28 | * information about the peer which doesn't depend on routes. | 28 | * information about the peer which doesn't depend on routes. |
29 | * At this moment this information consists only of ID field for the next | ||
30 | * outgoing IP packet. This field is incremented with each packet as encoded | ||
31 | * in inet_getid() function (include/net/inetpeer.h). | ||
32 | * At the moment of writing this notes identifier of IP packets is generated | ||
33 | * to be unpredictable using this code only for packets subjected | ||
34 | * (actually or potentially) to defragmentation. I.e. DF packets less than | ||
35 | * PMTU in size when local fragmentation is disabled use a constant ID and do | ||
36 | * not use this code (see ip_select_ident() in include/net/ip.h). | ||
37 | * | 29 | * |
38 | * Route cache entries hold references to our nodes. | ||
39 | * New cache entries get references via lookup by destination IP address in | ||
40 | * the avl tree. The reference is grabbed only when it's needed i.e. only | ||
41 | * when we try to output IP packet which needs an unpredictable ID (see | ||
42 | * __ip_select_ident() in net/ipv4/route.c). | ||
43 | * Nodes are removed only when reference counter goes to 0. | 30 | * Nodes are removed only when reference counter goes to 0. |
44 | * When it's happened the node may be removed when a sufficient amount of | 31 | * When it's happened the node may be removed when a sufficient amount of |
45 | * time has been passed since its last use. The less-recently-used entry can | 32 | * time has been passed since its last use. The less-recently-used entry can |
@@ -62,7 +49,6 @@ | |||
62 | * refcnt: atomically against modifications on other CPU; | 49 | * refcnt: atomically against modifications on other CPU; |
63 | * usually under some other lock to prevent node disappearing | 50 | * usually under some other lock to prevent node disappearing |
64 | * daddr: unchangeable | 51 | * daddr: unchangeable |
65 | * ip_id_count: atomic value (no lock needed) | ||
66 | */ | 52 | */ |
67 | 53 | ||
68 | static struct kmem_cache *peer_cachep __read_mostly; | 54 | static struct kmem_cache *peer_cachep __read_mostly; |
@@ -120,7 +106,7 @@ int inet_peer_maxttl __read_mostly = 10 * 60 * HZ; /* usual time to live: 10 min | |||
120 | static void inetpeer_gc_worker(struct work_struct *work) | 106 | static void inetpeer_gc_worker(struct work_struct *work) |
121 | { | 107 | { |
122 | struct inet_peer *p, *n, *c; | 108 | struct inet_peer *p, *n, *c; |
123 | LIST_HEAD(list); | 109 | struct list_head list; |
124 | 110 | ||
125 | spin_lock_bh(&gc_lock); | 111 | spin_lock_bh(&gc_lock); |
126 | list_replace_init(&gc_list, &list); | 112 | list_replace_init(&gc_list, &list); |
@@ -497,10 +483,6 @@ relookup: | |||
497 | p->daddr = *daddr; | 483 | p->daddr = *daddr; |
498 | atomic_set(&p->refcnt, 1); | 484 | atomic_set(&p->refcnt, 1); |
499 | atomic_set(&p->rid, 0); | 485 | atomic_set(&p->rid, 0); |
500 | atomic_set(&p->ip_id_count, | ||
501 | (daddr->family == AF_INET) ? | ||
502 | secure_ip_id(daddr->addr.a4) : | ||
503 | secure_ipv6_id(daddr->addr.a6)); | ||
504 | p->metrics[RTAX_LOCK-1] = INETPEER_METRICS_NEW; | 486 | p->metrics[RTAX_LOCK-1] = INETPEER_METRICS_NEW; |
505 | p->rate_tokens = 0; | 487 | p->rate_tokens = 0; |
506 | /* 60*HZ is arbitrary, but chosen enough high so that the first | 488 | /* 60*HZ is arbitrary, but chosen enough high so that the first |