tcp: fix outsegs stat for TSO segments
Account for TSO segments of an skb in TCP_MIB_OUTSEGS counter. Without doing this, the counter can be off by orders of magnitude from the actual number of segments sent. Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -133,6 +133,8 @@ struct linux_xfrm_mib {
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__this_cpu_add(mib[0]->mibs[field], addend)
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#define SNMP_ADD_STATS_USER(mib, field, addend) \
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this_cpu_add(mib[1]->mibs[field], addend)
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#define SNMP_ADD_STATS(mib, field, addend) \
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this_cpu_add(mib[0]->mibs[field], addend)
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/*
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* Use "__typeof__(*mib[0]) *ptr" instead of "__typeof__(mib[0]) ptr"
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* to make @ptr a non-percpu pointer.
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@ -294,6 +294,7 @@ extern struct proto tcp_prot;
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#define TCP_INC_STATS_BH(net, field) SNMP_INC_STATS_BH((net)->mib.tcp_statistics, field)
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#define TCP_DEC_STATS(net, field) SNMP_DEC_STATS((net)->mib.tcp_statistics, field)
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#define TCP_ADD_STATS_USER(net, field, val) SNMP_ADD_STATS_USER((net)->mib.tcp_statistics, field, val)
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#define TCP_ADD_STATS(net, field, val) SNMP_ADD_STATS((net)->mib.tcp_statistics, field, val)
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extern void tcp_v4_err(struct sk_buff *skb, u32);
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@ -888,7 +888,8 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
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tcp_event_data_sent(tp, skb, sk);
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if (after(tcb->end_seq, tp->snd_nxt) || tcb->seq == tcb->end_seq)
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TCP_INC_STATS(sock_net(sk), TCP_MIB_OUTSEGS);
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TCP_ADD_STATS(sock_net(sk), TCP_MIB_OUTSEGS,
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tcp_skb_pcount(skb));
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err = icsk->icsk_af_ops->queue_xmit(skb);
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if (likely(err <= 0))
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@ -2503,7 +2504,7 @@ struct sk_buff *tcp_make_synack(struct sock *sk, struct dst_entry *dst,
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th->window = htons(min(req->rcv_wnd, 65535U));
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tcp_options_write((__be32 *)(th + 1), tp, &opts);
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th->doff = (tcp_header_size >> 2);
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TCP_INC_STATS(sock_net(sk), TCP_MIB_OUTSEGS);
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TCP_ADD_STATS(sock_net(sk), TCP_MIB_OUTSEGS, tcp_skb_pcount(skb));
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#ifdef CONFIG_TCP_MD5SIG
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/* Okay, we have all we need - do the md5 hash if needed */
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