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authorDavid S. Miller <davem@davemloft.net>2018-08-02 10:55:32 -0700
committerDavid S. Miller <davem@davemloft.net>2018-08-02 10:55:32 -0700
commit89b1698c93a9dee043154f33d96bca9964e705f1 (patch)
treedd9dcb1965baae8edcf0b496aaa6a70609b6fc11 /net/ipv4
parentbe2net: fix spelling mistake "seqence" -> "sequence" (diff)
parentMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net (diff)
downloadlinux-dev-89b1698c93a9dee043154f33d96bca9964e705f1.tar.xz
linux-dev-89b1698c93a9dee043154f33d96bca9964e705f1.zip
Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net
The BTF conflicts were simple overlapping changes. The virtio_net conflict was an overlap of a fix of statistics counter, happening alongisde a move over to a bonafide statistics structure rather than counting value on the stack. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/fib_frontend.c4
-rw-r--r--net/ipv4/igmp.c3
-rw-r--r--net/ipv4/inet_fragment.c6
-rw-r--r--net/ipv4/ip_fragment.c5
-rw-r--r--net/ipv4/tcp_bbr.c4
-rw-r--r--net/ipv4/tcp_input.c9
6 files changed, 24 insertions, 7 deletions
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index e46cdd310e5f..2998b0e47d4b 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -292,19 +292,19 @@ __be32 fib_compute_spec_dst(struct sk_buff *skb)
return ip_hdr(skb)->daddr;
in_dev = __in_dev_get_rcu(dev);
- BUG_ON(!in_dev);
net = dev_net(dev);
scope = RT_SCOPE_UNIVERSE;
if (!ipv4_is_zeronet(ip_hdr(skb)->saddr)) {
+ bool vmark = in_dev && IN_DEV_SRC_VMARK(in_dev);
struct flowi4 fl4 = {
.flowi4_iif = LOOPBACK_IFINDEX,
.flowi4_oif = l3mdev_master_ifindex_rcu(dev),
.daddr = ip_hdr(skb)->saddr,
.flowi4_tos = RT_TOS(ip_hdr(skb)->tos),
.flowi4_scope = scope,
- .flowi4_mark = IN_DEV_SRC_VMARK(in_dev) ? skb->mark : 0,
+ .flowi4_mark = vmark ? skb->mark : 0,
};
if (!fib_lookup(net, &fl4, &res, 0))
return FIB_RES_PREFSRC(net, res);
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index bae9096821be..cf75f8944b05 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -1387,7 +1387,8 @@ static void ip_mc_hash_remove(struct in_device *in_dev,
/*
* A socket has joined a multicast group on device dev.
*/
-void __ip_mc_inc_group(struct in_device *in_dev, __be32 addr, unsigned int mode)
+static void __ip_mc_inc_group(struct in_device *in_dev, __be32 addr,
+ unsigned int mode)
{
struct ip_mc_list *im;
#ifdef CONFIG_IP_MULTICAST
diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c
index d3162baca9f1..ccd140e4082d 100644
--- a/net/ipv4/inet_fragment.c
+++ b/net/ipv4/inet_fragment.c
@@ -158,9 +158,6 @@ static struct inet_frag_queue *inet_frag_alloc(struct netns_frags *nf,
{
struct inet_frag_queue *q;
- if (!nf->high_thresh || frag_mem_limit(nf) > nf->high_thresh)
- return NULL;
-
q = kmem_cache_zalloc(f->frags_cachep, GFP_ATOMIC);
if (!q)
return NULL;
@@ -205,6 +202,9 @@ struct inet_frag_queue *inet_frag_find(struct netns_frags *nf, void *key)
{
struct inet_frag_queue *fq;
+ if (!nf->high_thresh || frag_mem_limit(nf) > nf->high_thresh)
+ return NULL;
+
rcu_read_lock();
fq = rhashtable_lookup(&nf->rhashtable, key, nf->f->rhash_params);
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 8e9528ebaa8e..d14d741fb05e 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -383,11 +383,16 @@ found:
int i = end - next->ip_defrag_offset; /* overlap is 'i' bytes */
if (i < next->len) {
+ int delta = -next->truesize;
+
/* Eat head of the next overlapped fragment
* and leave the loop. The next ones cannot overlap.
*/
if (!pskb_pull(next, i))
goto err;
+ delta += next->truesize;
+ if (delta)
+ add_frag_mem_limit(qp->q.net, delta);
next->ip_defrag_offset += i;
qp->q.meat -= i;
if (next->ip_summed != CHECKSUM_UNNECESSARY)
diff --git a/net/ipv4/tcp_bbr.c b/net/ipv4/tcp_bbr.c
index 3b5f45b9e81e..13d34427ca3d 100644
--- a/net/ipv4/tcp_bbr.c
+++ b/net/ipv4/tcp_bbr.c
@@ -358,6 +358,10 @@ static u32 bbr_target_cwnd(struct sock *sk, u32 bw, int gain)
/* Reduce delayed ACKs by rounding up cwnd to the next even number. */
cwnd = (cwnd + 1) & ~1U;
+ /* Ensure gain cycling gets inflight above BDP even for small BDPs. */
+ if (bbr->mode == BBR_PROBE_BW && gain > BBR_UNIT)
+ cwnd += 2;
+
return cwnd;
}
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 3d6156f07a8d..715d541b52dd 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -247,8 +247,15 @@ static void tcp_ecn_queue_cwr(struct tcp_sock *tp)
static void tcp_ecn_accept_cwr(struct tcp_sock *tp, const struct sk_buff *skb)
{
- if (tcp_hdr(skb)->cwr)
+ if (tcp_hdr(skb)->cwr) {
tp->ecn_flags &= ~TCP_ECN_DEMAND_CWR;
+
+ /* If the sender is telling us it has entered CWR, then its
+ * cwnd may be very low (even just 1 packet), so we should ACK
+ * immediately.
+ */
+ tcp_enter_quickack_mode((struct sock *)tp, 2);
+ }
}
static void tcp_ecn_withdraw_cwr(struct tcp_sock *tp)