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157 lines
5.0 KiB
157 lines
5.0 KiB
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
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Subject: [PATCH 14/31] net: sk_allocation() - concentrate socket related allocations
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Patch-mainline: Not yet
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Introduce sk_allocation(), this function allows to inject sock specific
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flags to each sock related allocation.
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Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
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Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de>
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---
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include/net/sock.h | 5 +++++
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net/ipv4/tcp.c | 3 ++-
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net/ipv4/tcp_output.c | 11 ++++++-----
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net/ipv6/tcp_ipv6.c | 15 +++++++++++----
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4 files changed, 24 insertions(+), 10 deletions(-)
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--- a/include/net/sock.h
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+++ b/include/net/sock.h
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@@ -565,6 +565,11 @@ static inline int sock_flag(struct sock
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return test_bit(flag, &sk->sk_flags);
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}
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+static inline gfp_t sk_allocation(struct sock *sk, gfp_t gfp_mask)
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+{
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+ return gfp_mask;
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+}
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+
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static inline void sk_acceptq_removed(struct sock *sk)
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{
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sk->sk_ack_backlog--;
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--- a/net/ipv4/tcp.c
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+++ b/net/ipv4/tcp.c
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@@ -685,7 +685,8 @@ struct sk_buff *sk_stream_alloc_skb(stru
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/* The TCP header must be at least 32-bit aligned. */
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size = ALIGN(size, 4);
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- skb = alloc_skb_fclone(size + sk->sk_prot->max_header, gfp);
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+ skb = alloc_skb_fclone(size + sk->sk_prot->max_header,
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+ sk_allocation(sk, gfp));
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if (skb) {
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if (sk_wmem_schedule(sk, skb->truesize)) {
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/*
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--- a/net/ipv4/tcp_output.c
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+++ b/net/ipv4/tcp_output.c
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@@ -2313,7 +2313,7 @@ void tcp_send_fin(struct sock *sk)
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/* Socket is locked, keep trying until memory is available. */
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for (;;) {
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skb = alloc_skb_fclone(MAX_TCP_HEADER,
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- sk->sk_allocation);
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+ sk_allocation(sk, GFP_KERNEL));
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if (skb)
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break;
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yield();
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@@ -2339,7 +2339,7 @@ void tcp_send_active_reset(struct sock *
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struct sk_buff *skb;
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/* NOTE: No TCP options attached and we never retransmit this. */
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- skb = alloc_skb(MAX_TCP_HEADER, priority);
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+ skb = alloc_skb(MAX_TCP_HEADER, sk_allocation(sk, priority));
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if (!skb) {
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NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPABORTFAILED);
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return;
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@@ -2412,7 +2412,8 @@ struct sk_buff *tcp_make_synack(struct s
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if (cvp != NULL && cvp->s_data_constant && cvp->s_data_desired)
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s_data_desired = cvp->s_data_desired;
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- skb = sock_wmalloc(sk, MAX_TCP_HEADER + 15 + s_data_desired, 1, GFP_ATOMIC);
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+ skb = sock_wmalloc(sk, MAX_TCP_HEADER + 15 + s_data_desired, 1,
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+ sk_allocation(sk, GFP_ATOMIC));
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if (skb == NULL)
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return NULL;
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@@ -2694,7 +2695,7 @@ void tcp_send_ack(struct sock *sk)
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* tcp_transmit_skb() will set the ownership to this
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* sock.
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*/
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- buff = alloc_skb(MAX_TCP_HEADER, GFP_ATOMIC);
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+ buff = alloc_skb(MAX_TCP_HEADER, sk_allocation(sk, GFP_ATOMIC));
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if (buff == NULL) {
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inet_csk_schedule_ack(sk);
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inet_csk(sk)->icsk_ack.ato = TCP_ATO_MIN;
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@@ -2729,7 +2730,7 @@ static int tcp_xmit_probe_skb(struct soc
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struct sk_buff *skb;
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/* We don't queue it, tcp_transmit_skb() sets ownership. */
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- skb = alloc_skb(MAX_TCP_HEADER, GFP_ATOMIC);
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+ skb = alloc_skb(MAX_TCP_HEADER, sk_allocation(sk, GFP_ATOMIC));
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if (skb == NULL)
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return -1;
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--- a/net/ipv6/tcp_ipv6.c
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+++ b/net/ipv6/tcp_ipv6.c
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@@ -589,7 +589,8 @@ static int tcp_v6_md5_do_add(struct sock
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} else {
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/* reallocate new list if current one is full. */
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if (!tp->md5sig_info) {
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- tp->md5sig_info = kzalloc(sizeof(*tp->md5sig_info), GFP_ATOMIC);
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+ tp->md5sig_info = kzalloc(sizeof(*tp->md5sig_info),
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+ sk_allocation(sk, GFP_ATOMIC));
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if (!tp->md5sig_info) {
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kfree(newkey);
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return -ENOMEM;
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@@ -602,7 +603,8 @@ static int tcp_v6_md5_do_add(struct sock
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}
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if (tp->md5sig_info->alloced6 == tp->md5sig_info->entries6) {
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keys = kmalloc((sizeof (tp->md5sig_info->keys6[0]) *
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- (tp->md5sig_info->entries6 + 1)), GFP_ATOMIC);
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+ (tp->md5sig_info->entries6 + 1)),
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+ sk_allocation(sk, GFP_ATOMIC));
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if (!keys) {
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tcp_free_md5sig_pool();
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@@ -726,7 +728,8 @@ static int tcp_v6_parse_md5_keys (struct
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struct tcp_sock *tp = tcp_sk(sk);
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struct tcp_md5sig_info *p;
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- p = kzalloc(sizeof(struct tcp_md5sig_info), GFP_KERNEL);
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+ p = kzalloc(sizeof(struct tcp_md5sig_info),
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+ sk_allocation(sk, GFP_KERNEL));
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if (!p)
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return -ENOMEM;
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@@ -997,6 +1000,7 @@ static void tcp_v6_send_response(struct
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unsigned int tot_len = sizeof(struct tcphdr);
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struct dst_entry *dst;
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__be32 *topt;
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+ gfp_t gfp_mask = GFP_ATOMIC;
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if (ts)
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tot_len += TCPOLEN_TSTAMP_ALIGNED;
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@@ -1006,7 +1010,7 @@ static void tcp_v6_send_response(struct
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#endif
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buff = alloc_skb(MAX_HEADER + sizeof(struct ipv6hdr) + tot_len,
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- GFP_ATOMIC);
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+ gfp_mask);
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if (buff == NULL)
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return;
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@@ -1083,6 +1087,7 @@ static void tcp_v6_send_reset(struct soc
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struct tcphdr *th = tcp_hdr(skb);
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u32 seq = 0, ack_seq = 0;
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struct tcp_md5sig_key *key = NULL;
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+ gfp_t gfp_mask = GFP_ATOMIC;
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if (th->rst)
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return;
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@@ -1094,6 +1099,8 @@ static void tcp_v6_send_reset(struct soc
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if (sk)
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key = tcp_v6_md5_do_lookup(sk, &ipv6_hdr(skb)->daddr);
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#endif
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+ if (sk)
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+ gfp_mask = sk_allocation(sk, gfp_mask);
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if (th->ack)
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seq = ntohl(th->ack_seq);
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