tcp: (whitespace only) fix confusing indentation
The indentation in part of tcp_minisocks makes it look like one of the if statements is much more important than it actually is. Signed-off-by: Adam Langley <agl@imperialviolet.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Adam Langley
David S. Miller
Родитель
827ebd6410
Коммит
2aaab9a0cc
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@ -618,89 +618,87 @@ struct sock *tcp_check_req(struct sock *sk,struct sk_buff *skb,
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/* In sequence, PAWS is OK. */
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if (tmp_opt.saw_tstamp && !after(TCP_SKB_CB(skb)->seq, tcp_rsk(req)->rcv_isn + 1))
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req->ts_recent = tmp_opt.rcv_tsval;
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req->ts_recent = tmp_opt.rcv_tsval;
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if (TCP_SKB_CB(skb)->seq == tcp_rsk(req)->rcv_isn) {
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/* Truncate SYN, it is out of window starting
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at tcp_rsk(req)->rcv_isn + 1. */
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flg &= ~TCP_FLAG_SYN;
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}
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if (TCP_SKB_CB(skb)->seq == tcp_rsk(req)->rcv_isn) {
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/* Truncate SYN, it is out of window starting
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at tcp_rsk(req)->rcv_isn + 1. */
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flg &= ~TCP_FLAG_SYN;
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}
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/* RFC793: "second check the RST bit" and
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* "fourth, check the SYN bit"
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*/
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if (flg & (TCP_FLAG_RST|TCP_FLAG_SYN)) {
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TCP_INC_STATS_BH(sock_net(sk), TCP_MIB_ATTEMPTFAILS);
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goto embryonic_reset;
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}
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/* RFC793: "second check the RST bit" and
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* "fourth, check the SYN bit"
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*/
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if (flg & (TCP_FLAG_RST|TCP_FLAG_SYN)) {
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TCP_INC_STATS_BH(sock_net(sk), TCP_MIB_ATTEMPTFAILS);
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goto embryonic_reset;
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}
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/* ACK sequence verified above, just make sure ACK is
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* set. If ACK not set, just silently drop the packet.
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*/
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if (!(flg & TCP_FLAG_ACK))
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return NULL;
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/* ACK sequence verified above, just make sure ACK is
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* set. If ACK not set, just silently drop the packet.
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*/
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if (!(flg & TCP_FLAG_ACK))
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return NULL;
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/* If TCP_DEFER_ACCEPT is set, drop bare ACK. */
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if (inet_csk(sk)->icsk_accept_queue.rskq_defer_accept &&
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TCP_SKB_CB(skb)->end_seq == tcp_rsk(req)->rcv_isn + 1) {
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inet_rsk(req)->acked = 1;
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return NULL;
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}
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/* If TCP_DEFER_ACCEPT is set, drop bare ACK. */
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if (inet_csk(sk)->icsk_accept_queue.rskq_defer_accept &&
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TCP_SKB_CB(skb)->end_seq == tcp_rsk(req)->rcv_isn + 1) {
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inet_rsk(req)->acked = 1;
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return NULL;
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}
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/* OK, ACK is valid, create big socket and
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* feed this segment to it. It will repeat all
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* the tests. THIS SEGMENT MUST MOVE SOCKET TO
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* ESTABLISHED STATE. If it will be dropped after
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* socket is created, wait for troubles.
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*/
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child = inet_csk(sk)->icsk_af_ops->syn_recv_sock(sk, skb,
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req, NULL);
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if (child == NULL)
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goto listen_overflow;
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/* OK, ACK is valid, create big socket and
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* feed this segment to it. It will repeat all
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* the tests. THIS SEGMENT MUST MOVE SOCKET TO
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* ESTABLISHED STATE. If it will be dropped after
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* socket is created, wait for troubles.
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*/
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child = inet_csk(sk)->icsk_af_ops->syn_recv_sock(sk, skb, req, NULL);
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if (child == NULL)
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goto listen_overflow;
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#ifdef CONFIG_TCP_MD5SIG
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else {
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/* Copy over the MD5 key from the original socket */
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struct tcp_md5sig_key *key;
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struct tcp_sock *tp = tcp_sk(sk);
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key = tp->af_specific->md5_lookup(sk, child);
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if (key != NULL) {
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/*
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* We're using one, so create a matching key on the
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* newsk structure. If we fail to get memory then we
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* end up not copying the key across. Shucks.
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*/
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char *newkey = kmemdup(key->key, key->keylen,
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GFP_ATOMIC);
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if (newkey) {
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if (!tcp_alloc_md5sig_pool())
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BUG();
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tp->af_specific->md5_add(child, child,
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newkey,
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key->keylen);
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}
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else {
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/* Copy over the MD5 key from the original socket */
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struct tcp_md5sig_key *key;
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struct tcp_sock *tp = tcp_sk(sk);
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key = tp->af_specific->md5_lookup(sk, child);
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if (key != NULL) {
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/*
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* We're using one, so create a matching key on the
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* newsk structure. If we fail to get memory then we
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* end up not copying the key across. Shucks.
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*/
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char *newkey = kmemdup(key->key, key->keylen,
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GFP_ATOMIC);
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if (newkey) {
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if (!tcp_alloc_md5sig_pool())
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BUG();
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tp->af_specific->md5_add(child, child, newkey,
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key->keylen);
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}
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}
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}
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#endif
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inet_csk_reqsk_queue_unlink(sk, req, prev);
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inet_csk_reqsk_queue_removed(sk, req);
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inet_csk_reqsk_queue_unlink(sk, req, prev);
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inet_csk_reqsk_queue_removed(sk, req);
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inet_csk_reqsk_queue_add(sk, req, child);
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return child;
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inet_csk_reqsk_queue_add(sk, req, child);
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return child;
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listen_overflow:
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if (!sysctl_tcp_abort_on_overflow) {
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inet_rsk(req)->acked = 1;
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return NULL;
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}
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embryonic_reset:
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NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_EMBRYONICRSTS);
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if (!(flg & TCP_FLAG_RST))
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req->rsk_ops->send_reset(sk, skb);
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inet_csk_reqsk_queue_drop(sk, req, prev);
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listen_overflow:
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if (!sysctl_tcp_abort_on_overflow) {
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inet_rsk(req)->acked = 1;
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return NULL;
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}
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embryonic_reset:
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NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_EMBRYONICRSTS);
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if (!(flg & TCP_FLAG_RST))
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req->rsk_ops->send_reset(sk, skb);
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inet_csk_reqsk_queue_drop(sk, req, prev);
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return NULL;
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}
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/*
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