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-rw-r--r--net/ipv4/icmp.c12
-rw-r--r--net/ipv4/ipcomp.c2
-rw-r--r--net/ipv4/netfilter/ipt_ECN.c17
-rw-r--r--net/ipv4/netfilter/ipt_TCPMSS.c7
-rw-r--r--net/ipv4/tcp_output.c39
5 files changed, 40 insertions, 37 deletions
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index 3d78464f64e..badfc584997 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -349,12 +349,12 @@ static void icmp_push_reply(struct icmp_bxm *icmp_param,
{
struct sk_buff *skb;
- ip_append_data(icmp_socket->sk, icmp_glue_bits, icmp_param,
- icmp_param->data_len+icmp_param->head_len,
- icmp_param->head_len,
- ipc, rt, MSG_DONTWAIT);
-
- if ((skb = skb_peek(&icmp_socket->sk->sk_write_queue)) != NULL) {
+ if (ip_append_data(icmp_socket->sk, icmp_glue_bits, icmp_param,
+ icmp_param->data_len+icmp_param->head_len,
+ icmp_param->head_len,
+ ipc, rt, MSG_DONTWAIT) < 0)
+ ip_flush_pending_frames(icmp_socket->sk);
+ else if ((skb = skb_peek(&icmp_socket->sk->sk_write_queue)) != NULL) {
struct icmphdr *icmph = skb->h.icmph;
unsigned int csum = 0;
struct sk_buff *skb1;
diff --git a/net/ipv4/ipcomp.c b/net/ipv4/ipcomp.c
index 2065944fd9e..7ded6e60f43 100644
--- a/net/ipv4/ipcomp.c
+++ b/net/ipv4/ipcomp.c
@@ -358,7 +358,7 @@ static struct crypto_tfm **ipcomp_alloc_tfms(const char *alg_name)
int cpu;
/* This can be any valid CPU ID so we don't need locking. */
- cpu = smp_processor_id();
+ cpu = raw_smp_processor_id();
list_for_each_entry(pos, &ipcomp_tfms_list, list) {
struct crypto_tfm *tfm;
diff --git a/net/ipv4/netfilter/ipt_ECN.c b/net/ipv4/netfilter/ipt_ECN.c
index ada9911118e..94a0ce1c1c9 100644
--- a/net/ipv4/netfilter/ipt_ECN.c
+++ b/net/ipv4/netfilter/ipt_ECN.c
@@ -61,16 +61,20 @@ set_ect_tcp(struct sk_buff **pskb, const struct ipt_ECN_info *einfo, int inward)
if (!tcph)
return 0;
- if (!(einfo->operation & IPT_ECN_OP_SET_ECE
- || tcph->ece == einfo->proto.tcp.ece)
- && (!(einfo->operation & IPT_ECN_OP_SET_CWR
- || tcph->cwr == einfo->proto.tcp.cwr)))
+ if ((!(einfo->operation & IPT_ECN_OP_SET_ECE) ||
+ tcph->ece == einfo->proto.tcp.ece) &&
+ ((!(einfo->operation & IPT_ECN_OP_SET_CWR) ||
+ tcph->cwr == einfo->proto.tcp.cwr)))
return 1;
if (!skb_ip_make_writable(pskb, (*pskb)->nh.iph->ihl*4+sizeof(*tcph)))
return 0;
tcph = (void *)(*pskb)->nh.iph + (*pskb)->nh.iph->ihl*4;
+ if ((*pskb)->ip_summed == CHECKSUM_HW &&
+ skb_checksum_help(*pskb, inward))
+ return 0;
+
diffs[0] = ((u_int16_t *)tcph)[6];
if (einfo->operation & IPT_ECN_OP_SET_ECE)
tcph->ece = einfo->proto.tcp.ece;
@@ -79,13 +83,10 @@ set_ect_tcp(struct sk_buff **pskb, const struct ipt_ECN_info *einfo, int inward)
diffs[1] = ((u_int16_t *)tcph)[6];
diffs[0] = diffs[0] ^ 0xFFFF;
- if ((*pskb)->ip_summed != CHECKSUM_HW)
+ if ((*pskb)->ip_summed != CHECKSUM_UNNECESSARY)
tcph->check = csum_fold(csum_partial((char *)diffs,
sizeof(diffs),
tcph->check^0xFFFF));
- else
- if (skb_checksum_help(*pskb, inward))
- return 0;
(*pskb)->nfcache |= NFC_ALTERED;
return 1;
}
diff --git a/net/ipv4/netfilter/ipt_TCPMSS.c b/net/ipv4/netfilter/ipt_TCPMSS.c
index 1049050b2bf..7b84a254440 100644
--- a/net/ipv4/netfilter/ipt_TCPMSS.c
+++ b/net/ipv4/netfilter/ipt_TCPMSS.c
@@ -61,6 +61,10 @@ ipt_tcpmss_target(struct sk_buff **pskb,
if (!skb_ip_make_writable(pskb, (*pskb)->len))
return NF_DROP;
+ if ((*pskb)->ip_summed == CHECKSUM_HW &&
+ skb_checksum_help(*pskb, out == NULL))
+ return NF_DROP;
+
iph = (*pskb)->nh.iph;
tcplen = (*pskb)->len - iph->ihl*4;
@@ -186,9 +190,6 @@ ipt_tcpmss_target(struct sk_buff **pskb,
newmss);
retmodified:
- /* We never hw checksum SYN packets. */
- BUG_ON((*pskb)->ip_summed == CHECKSUM_HW);
-
(*pskb)->nfcache |= NFC_UNKNOWN | NFC_ALTERED;
return IPT_CONTINUE;
}
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 3ed6fc15815..566045e5843 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -861,7 +861,8 @@ static int tso_fragment(struct sock *sk, struct sk_buff *skb, unsigned int len,
u16 flags;
/* All of a TSO frame must be composed of paged data. */
- BUG_ON(skb->len != skb->data_len);
+ if (skb->len != skb->data_len)
+ return tcp_fragment(sk, skb, len, mss_now);
buff = sk_stream_alloc_pskb(sk, 0, 0, GFP_ATOMIC);
if (unlikely(buff == NULL))
@@ -974,6 +975,8 @@ static int tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle)
sent_pkts = 0;
while ((skb = sk->sk_send_head)) {
+ unsigned int limit;
+
tso_segs = tcp_init_tso_segs(sk, skb, mss_now);
BUG_ON(!tso_segs);
@@ -994,9 +997,10 @@ static int tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle)
break;
}
+ limit = mss_now;
if (tso_segs > 1) {
- u32 limit = tcp_window_allows(tp, skb,
- mss_now, cwnd_quota);
+ limit = tcp_window_allows(tp, skb,
+ mss_now, cwnd_quota);
if (skb->len < limit) {
unsigned int trim = skb->len % mss_now;
@@ -1004,15 +1008,12 @@ static int tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle)
if (trim)
limit = skb->len - trim;
}
- if (skb->len > limit) {
- if (tso_fragment(sk, skb, limit, mss_now))
- break;
- }
- } else if (unlikely(skb->len > mss_now)) {
- if (unlikely(tcp_fragment(sk, skb, mss_now, mss_now)))
- break;
}
+ if (skb->len > limit &&
+ unlikely(tso_fragment(sk, skb, limit, mss_now)))
+ break;
+
TCP_SKB_CB(skb)->when = tcp_time_stamp;
if (unlikely(tcp_transmit_skb(sk, skb_clone(skb, GFP_ATOMIC))))
@@ -1064,11 +1065,14 @@ void tcp_push_one(struct sock *sk, unsigned int mss_now)
cwnd_quota = tcp_snd_test(sk, skb, mss_now, TCP_NAGLE_PUSH);
if (likely(cwnd_quota)) {
+ unsigned int limit;
+
BUG_ON(!tso_segs);
+ limit = mss_now;
if (tso_segs > 1) {
- u32 limit = tcp_window_allows(tp, skb,
- mss_now, cwnd_quota);
+ limit = tcp_window_allows(tp, skb,
+ mss_now, cwnd_quota);
if (skb->len < limit) {
unsigned int trim = skb->len % mss_now;
@@ -1076,15 +1080,12 @@ void tcp_push_one(struct sock *sk, unsigned int mss_now)
if (trim)
limit = skb->len - trim;
}
- if (skb->len > limit) {
- if (unlikely(tso_fragment(sk, skb, limit, mss_now)))
- return;
- }
- } else if (unlikely(skb->len > mss_now)) {
- if (unlikely(tcp_fragment(sk, skb, mss_now, mss_now)))
- return;
}
+ if (skb->len > limit &&
+ unlikely(tso_fragment(sk, skb, limit, mss_now)))
+ return;
+
/* Send it out now. */
TCP_SKB_CB(skb)->when = tcp_time_stamp;
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-21 14:17:09 +0000