diff options
author | David S. Miller <davem@davemloft.net> | 2010-03-20 18:24:29 -0400 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2010-03-20 18:24:29 -0400 |
commit | e77c8e83dd587f2616d7ff20d23a897891e6e20d (patch) | |
tree | ba5d2ce6541119f329b2fd51181aaae8528b38f0 /net/ipv4 | |
parent | 641cb85e68945878d520d5fc3c2dc64aa1dda868 (diff) | |
parent | af98441397227a5a4f212cd48710eea72a14dbdb (diff) |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Diffstat (limited to 'net/ipv4')
-rw-r--r-- | net/ipv4/ipmr.c | 3 | ||||
-rw-r--r-- | net/ipv4/route.c | 14 | ||||
-rw-r--r-- | net/ipv4/tcp.c | 65 | ||||
-rw-r--r-- | net/ipv4/tcp_input.c | 3 | ||||
-rw-r--r-- | net/ipv4/tcp_ipv4.c | 5 |
5 files changed, 65 insertions, 25 deletions
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index 8582e12e4a62..0b9d03c54dc3 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c | |||
@@ -802,6 +802,9 @@ static int ipmr_mfc_add(struct net *net, struct mfcctl *mfc, int mrtsock) | |||
802 | int line; | 802 | int line; |
803 | struct mfc_cache *uc, *c, **cp; | 803 | struct mfc_cache *uc, *c, **cp; |
804 | 804 | ||
805 | if (mfc->mfcc_parent >= MAXVIFS) | ||
806 | return -ENFILE; | ||
807 | |||
805 | line = MFC_HASH(mfc->mfcc_mcastgrp.s_addr, mfc->mfcc_origin.s_addr); | 808 | line = MFC_HASH(mfc->mfcc_mcastgrp.s_addr, mfc->mfcc_origin.s_addr); |
806 | 809 | ||
807 | for (cp = &net->ipv4.mfc_cache_array[line]; | 810 | for (cp = &net->ipv4.mfc_cache_array[line]; |
diff --git a/net/ipv4/route.c b/net/ipv4/route.c index a770df2493d2..32d396196df8 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c | |||
@@ -1441,7 +1441,7 @@ void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw, | |||
1441 | dev_hold(rt->u.dst.dev); | 1441 | dev_hold(rt->u.dst.dev); |
1442 | if (rt->idev) | 1442 | if (rt->idev) |
1443 | in_dev_hold(rt->idev); | 1443 | in_dev_hold(rt->idev); |
1444 | rt->u.dst.obsolete = 0; | 1444 | rt->u.dst.obsolete = -1; |
1445 | rt->u.dst.lastuse = jiffies; | 1445 | rt->u.dst.lastuse = jiffies; |
1446 | rt->u.dst.path = &rt->u.dst; | 1446 | rt->u.dst.path = &rt->u.dst; |
1447 | rt->u.dst.neighbour = NULL; | 1447 | rt->u.dst.neighbour = NULL; |
@@ -1506,7 +1506,7 @@ static struct dst_entry *ipv4_negative_advice(struct dst_entry *dst) | |||
1506 | struct dst_entry *ret = dst; | 1506 | struct dst_entry *ret = dst; |
1507 | 1507 | ||
1508 | if (rt) { | 1508 | if (rt) { |
1509 | if (dst->obsolete) { | 1509 | if (dst->obsolete > 0) { |
1510 | ip_rt_put(rt); | 1510 | ip_rt_put(rt); |
1511 | ret = NULL; | 1511 | ret = NULL; |
1512 | } else if ((rt->rt_flags & RTCF_REDIRECTED) || | 1512 | } else if ((rt->rt_flags & RTCF_REDIRECTED) || |
@@ -1726,7 +1726,9 @@ static void ip_rt_update_pmtu(struct dst_entry *dst, u32 mtu) | |||
1726 | 1726 | ||
1727 | static struct dst_entry *ipv4_dst_check(struct dst_entry *dst, u32 cookie) | 1727 | static struct dst_entry *ipv4_dst_check(struct dst_entry *dst, u32 cookie) |
1728 | { | 1728 | { |
1729 | return NULL; | 1729 | if (rt_is_expired((struct rtable *)dst)) |
1730 | return NULL; | ||
1731 | return dst; | ||
1730 | } | 1732 | } |
1731 | 1733 | ||
1732 | static void ipv4_dst_destroy(struct dst_entry *dst) | 1734 | static void ipv4_dst_destroy(struct dst_entry *dst) |
@@ -1888,7 +1890,8 @@ static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr, | |||
1888 | if (!rth) | 1890 | if (!rth) |
1889 | goto e_nobufs; | 1891 | goto e_nobufs; |
1890 | 1892 | ||
1891 | rth->u.dst.output= ip_rt_bug; | 1893 | rth->u.dst.output = ip_rt_bug; |
1894 | rth->u.dst.obsolete = -1; | ||
1892 | 1895 | ||
1893 | atomic_set(&rth->u.dst.__refcnt, 1); | 1896 | atomic_set(&rth->u.dst.__refcnt, 1); |
1894 | rth->u.dst.flags= DST_HOST; | 1897 | rth->u.dst.flags= DST_HOST; |
@@ -2054,6 +2057,7 @@ static int __mkroute_input(struct sk_buff *skb, | |||
2054 | rth->fl.oif = 0; | 2057 | rth->fl.oif = 0; |
2055 | rth->rt_spec_dst= spec_dst; | 2058 | rth->rt_spec_dst= spec_dst; |
2056 | 2059 | ||
2060 | rth->u.dst.obsolete = -1; | ||
2057 | rth->u.dst.input = ip_forward; | 2061 | rth->u.dst.input = ip_forward; |
2058 | rth->u.dst.output = ip_output; | 2062 | rth->u.dst.output = ip_output; |
2059 | rth->rt_genid = rt_genid(dev_net(rth->u.dst.dev)); | 2063 | rth->rt_genid = rt_genid(dev_net(rth->u.dst.dev)); |
@@ -2218,6 +2222,7 @@ local_input: | |||
2218 | goto e_nobufs; | 2222 | goto e_nobufs; |
2219 | 2223 | ||
2220 | rth->u.dst.output= ip_rt_bug; | 2224 | rth->u.dst.output= ip_rt_bug; |
2225 | rth->u.dst.obsolete = -1; | ||
2221 | rth->rt_genid = rt_genid(net); | 2226 | rth->rt_genid = rt_genid(net); |
2222 | 2227 | ||
2223 | atomic_set(&rth->u.dst.__refcnt, 1); | 2228 | atomic_set(&rth->u.dst.__refcnt, 1); |
@@ -2444,6 +2449,7 @@ static int __mkroute_output(struct rtable **result, | |||
2444 | rth->rt_spec_dst= fl->fl4_src; | 2449 | rth->rt_spec_dst= fl->fl4_src; |
2445 | 2450 | ||
2446 | rth->u.dst.output=ip_output; | 2451 | rth->u.dst.output=ip_output; |
2452 | rth->u.dst.obsolete = -1; | ||
2447 | rth->rt_genid = rt_genid(dev_net(dev_out)); | 2453 | rth->rt_genid = rt_genid(dev_net(dev_out)); |
2448 | 2454 | ||
2449 | RT_CACHE_STAT_INC(out_slow_tot); | 2455 | RT_CACHE_STAT_INC(out_slow_tot); |
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 5901010fad55..6afb6d8662b2 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c | |||
@@ -429,7 +429,7 @@ unsigned int tcp_poll(struct file *file, struct socket *sock, poll_table *wait) | |||
429 | if (tp->urg_seq == tp->copied_seq && | 429 | if (tp->urg_seq == tp->copied_seq && |
430 | !sock_flag(sk, SOCK_URGINLINE) && | 430 | !sock_flag(sk, SOCK_URGINLINE) && |
431 | tp->urg_data) | 431 | tp->urg_data) |
432 | target--; | 432 | target++; |
433 | 433 | ||
434 | /* Potential race condition. If read of tp below will | 434 | /* Potential race condition. If read of tp below will |
435 | * escape above sk->sk_state, we can be illegally awaken | 435 | * escape above sk->sk_state, we can be illegally awaken |
@@ -1254,6 +1254,39 @@ static void tcp_prequeue_process(struct sock *sk) | |||
1254 | tp->ucopy.memory = 0; | 1254 | tp->ucopy.memory = 0; |
1255 | } | 1255 | } |
1256 | 1256 | ||
1257 | #ifdef CONFIG_NET_DMA | ||
1258 | static void tcp_service_net_dma(struct sock *sk, bool wait) | ||
1259 | { | ||
1260 | dma_cookie_t done, used; | ||
1261 | dma_cookie_t last_issued; | ||
1262 | struct tcp_sock *tp = tcp_sk(sk); | ||
1263 | |||
1264 | if (!tp->ucopy.dma_chan) | ||
1265 | return; | ||
1266 | |||
1267 | last_issued = tp->ucopy.dma_cookie; | ||
1268 | dma_async_memcpy_issue_pending(tp->ucopy.dma_chan); | ||
1269 | |||
1270 | do { | ||
1271 | if (dma_async_memcpy_complete(tp->ucopy.dma_chan, | ||
1272 | last_issued, &done, | ||
1273 | &used) == DMA_SUCCESS) { | ||
1274 | /* Safe to free early-copied skbs now */ | ||
1275 | __skb_queue_purge(&sk->sk_async_wait_queue); | ||
1276 | break; | ||
1277 | } else { | ||
1278 | struct sk_buff *skb; | ||
1279 | while ((skb = skb_peek(&sk->sk_async_wait_queue)) && | ||
1280 | (dma_async_is_complete(skb->dma_cookie, done, | ||
1281 | used) == DMA_SUCCESS)) { | ||
1282 | __skb_dequeue(&sk->sk_async_wait_queue); | ||
1283 | kfree_skb(skb); | ||
1284 | } | ||
1285 | } | ||
1286 | } while (wait); | ||
1287 | } | ||
1288 | #endif | ||
1289 | |||
1257 | static inline struct sk_buff *tcp_recv_skb(struct sock *sk, u32 seq, u32 *off) | 1290 | static inline struct sk_buff *tcp_recv_skb(struct sock *sk, u32 seq, u32 *off) |
1258 | { | 1291 | { |
1259 | struct sk_buff *skb; | 1292 | struct sk_buff *skb; |
@@ -1546,6 +1579,10 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, | |||
1546 | /* __ Set realtime policy in scheduler __ */ | 1579 | /* __ Set realtime policy in scheduler __ */ |
1547 | } | 1580 | } |
1548 | 1581 | ||
1582 | #ifdef CONFIG_NET_DMA | ||
1583 | if (tp->ucopy.dma_chan) | ||
1584 | dma_async_memcpy_issue_pending(tp->ucopy.dma_chan); | ||
1585 | #endif | ||
1549 | if (copied >= target) { | 1586 | if (copied >= target) { |
1550 | /* Do not sleep, just process backlog. */ | 1587 | /* Do not sleep, just process backlog. */ |
1551 | release_sock(sk); | 1588 | release_sock(sk); |
@@ -1554,6 +1591,7 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, | |||
1554 | sk_wait_data(sk, &timeo); | 1591 | sk_wait_data(sk, &timeo); |
1555 | 1592 | ||
1556 | #ifdef CONFIG_NET_DMA | 1593 | #ifdef CONFIG_NET_DMA |
1594 | tcp_service_net_dma(sk, false); /* Don't block */ | ||
1557 | tp->ucopy.wakeup = 0; | 1595 | tp->ucopy.wakeup = 0; |
1558 | #endif | 1596 | #endif |
1559 | 1597 | ||
@@ -1633,6 +1671,9 @@ do_prequeue: | |||
1633 | copied = -EFAULT; | 1671 | copied = -EFAULT; |
1634 | break; | 1672 | break; |
1635 | } | 1673 | } |
1674 | |||
1675 | dma_async_memcpy_issue_pending(tp->ucopy.dma_chan); | ||
1676 | |||
1636 | if ((offset + used) == skb->len) | 1677 | if ((offset + used) == skb->len) |
1637 | copied_early = 1; | 1678 | copied_early = 1; |
1638 | 1679 | ||
@@ -1702,27 +1743,9 @@ skip_copy: | |||
1702 | } | 1743 | } |
1703 | 1744 | ||
1704 | #ifdef CONFIG_NET_DMA | 1745 | #ifdef CONFIG_NET_DMA |
1705 | if (tp->ucopy.dma_chan) { | 1746 | tcp_service_net_dma(sk, true); /* Wait for queue to drain */ |
1706 | dma_cookie_t done, used; | 1747 | tp->ucopy.dma_chan = NULL; |
1707 | |||
1708 | dma_async_memcpy_issue_pending(tp->ucopy.dma_chan); | ||
1709 | |||
1710 | while (dma_async_memcpy_complete(tp->ucopy.dma_chan, | ||
1711 | tp->ucopy.dma_cookie, &done, | ||
1712 | &used) == DMA_IN_PROGRESS) { | ||
1713 | /* do partial cleanup of sk_async_wait_queue */ | ||
1714 | while ((skb = skb_peek(&sk->sk_async_wait_queue)) && | ||
1715 | (dma_async_is_complete(skb->dma_cookie, done, | ||
1716 | used) == DMA_SUCCESS)) { | ||
1717 | __skb_dequeue(&sk->sk_async_wait_queue); | ||
1718 | kfree_skb(skb); | ||
1719 | } | ||
1720 | } | ||
1721 | 1748 | ||
1722 | /* Safe to free early-copied skbs now */ | ||
1723 | __skb_queue_purge(&sk->sk_async_wait_queue); | ||
1724 | tp->ucopy.dma_chan = NULL; | ||
1725 | } | ||
1726 | if (tp->ucopy.pinned_list) { | 1749 | if (tp->ucopy.pinned_list) { |
1727 | dma_unpin_iovec_pages(tp->ucopy.pinned_list); | 1750 | dma_unpin_iovec_pages(tp->ucopy.pinned_list); |
1728 | tp->ucopy.pinned_list = NULL; | 1751 | tp->ucopy.pinned_list = NULL; |
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 788851ca8c5d..c096a4218b8f 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c | |||
@@ -2511,6 +2511,9 @@ static void tcp_mark_head_lost(struct sock *sk, int packets) | |||
2511 | int err; | 2511 | int err; |
2512 | unsigned int mss; | 2512 | unsigned int mss; |
2513 | 2513 | ||
2514 | if (packets == 0) | ||
2515 | return; | ||
2516 | |||
2514 | WARN_ON(packets > tp->packets_out); | 2517 | WARN_ON(packets > tp->packets_out); |
2515 | if (tp->lost_skb_hint) { | 2518 | if (tp->lost_skb_hint) { |
2516 | skb = tp->lost_skb_hint; | 2519 | skb = tp->lost_skb_hint; |
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 70df40980a87..f4df5f931f36 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c | |||
@@ -370,6 +370,11 @@ void tcp_v4_err(struct sk_buff *icmp_skb, u32 info) | |||
370 | if (sk->sk_state == TCP_CLOSE) | 370 | if (sk->sk_state == TCP_CLOSE) |
371 | goto out; | 371 | goto out; |
372 | 372 | ||
373 | if (unlikely(iph->ttl < inet_sk(sk)->min_ttl)) { | ||
374 | NET_INC_STATS_BH(net, LINUX_MIB_TCPMINTTLDROP); | ||
375 | goto out; | ||
376 | } | ||
377 | |||
373 | icsk = inet_csk(sk); | 378 | icsk = inet_csk(sk); |
374 | tp = tcp_sk(sk); | 379 | tp = tcp_sk(sk); |
375 | seq = ntohl(th->seq); | 380 | seq = ntohl(th->seq); |