From 3ab224be6d69de912ee21302745ea45a99274dbc Mon Sep 17 00:00:00 2001 From: Hideo Aoki Date: Mon, 31 Dec 2007 00:11:19 -0800 Subject: [NET] CORE: Introducing new memory accounting interface. This patch introduces new memory accounting functions for each network protocol. Most of them are renamed from memory accounting functions for stream protocols. At the same time, some stream memory accounting functions are removed since other functions do same thing. Renaming: sk_stream_free_skb() -> sk_wmem_free_skb() __sk_stream_mem_reclaim() -> __sk_mem_reclaim() sk_stream_mem_reclaim() -> sk_mem_reclaim() sk_stream_mem_schedule -> __sk_mem_schedule() sk_stream_pages() -> sk_mem_pages() sk_stream_rmem_schedule() -> sk_rmem_schedule() sk_stream_wmem_schedule() -> sk_wmem_schedule() sk_charge_skb() -> sk_mem_charge() Removeing sk_stream_rfree(): consolidates into sock_rfree() sk_stream_set_owner_r(): consolidates into skb_set_owner_r() sk_stream_mem_schedule() The following functions are added. sk_has_account(): check if the protocol supports accounting sk_mem_uncharge(): do the opposite of sk_mem_charge() In addition, to achieve consolidation, updating sk_wmem_queued is removed from sk_mem_charge(). Next, to consolidate memory accounting functions, this patch adds memory accounting calls to network core functions. Moreover, present memory accounting call is renamed to new accounting call. Finally we replace present memory accounting calls with new interface in TCP and SCTP. Signed-off-by: Takahiro Yasui Signed-off-by: Hideo Aoki Signed-off-by: David S. Miller --- net/ipv4/tcp_input.c | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-) (limited to 'net/ipv4/tcp_input.c') diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index efea9873208e..722c9cbb91e3 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -591,7 +591,7 @@ static void tcp_event_data_recv(struct sock *sk, struct sk_buff *skb) * restart window, so that we send ACKs quickly. */ tcp_incr_quickack(sk); - sk_stream_mem_reclaim(sk); + sk_mem_reclaim(sk); } } icsk->icsk_ack.lrcvtime = now; @@ -2851,7 +2851,7 @@ static int tcp_clean_rtx_queue(struct sock *sk, int prior_fackets) break; tcp_unlink_write_queue(skb, sk); - sk_stream_free_skb(sk, skb); + sk_wmem_free_skb(sk, skb); tcp_clear_all_retrans_hints(tp); } @@ -3567,7 +3567,7 @@ static void tcp_fin(struct sk_buff *skb, struct sock *sk, struct tcphdr *th) __skb_queue_purge(&tp->out_of_order_queue); if (tcp_is_sack(tp)) tcp_sack_reset(&tp->rx_opt); - sk_stream_mem_reclaim(sk); + sk_mem_reclaim(sk); if (!sock_flag(sk, SOCK_DEAD)) { sk->sk_state_change(sk); @@ -3850,12 +3850,12 @@ static void tcp_data_queue(struct sock *sk, struct sk_buff *skb) queue_and_out: if (eaten < 0 && (atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf || - !sk_stream_rmem_schedule(sk, skb))) { + !sk_rmem_schedule(sk, skb->truesize))) { if (tcp_prune_queue(sk) < 0 || - !sk_stream_rmem_schedule(sk, skb)) + !sk_rmem_schedule(sk, skb->truesize)) goto drop; } - sk_stream_set_owner_r(skb, sk); + skb_set_owner_r(skb, sk); __skb_queue_tail(&sk->sk_receive_queue, skb); } tp->rcv_nxt = TCP_SKB_CB(skb)->end_seq; @@ -3924,9 +3924,9 @@ drop: TCP_ECN_check_ce(tp, skb); if (atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf || - !sk_stream_rmem_schedule(sk, skb)) { + !sk_rmem_schedule(sk, skb->truesize)) { if (tcp_prune_queue(sk) < 0 || - !sk_stream_rmem_schedule(sk, skb)) + !sk_rmem_schedule(sk, skb->truesize)) goto drop; } @@ -3937,7 +3937,7 @@ drop: SOCK_DEBUG(sk, "out of order segment: rcv_next %X seq %X - %X\n", tp->rcv_nxt, TCP_SKB_CB(skb)->seq, TCP_SKB_CB(skb)->end_seq); - sk_stream_set_owner_r(skb, sk); + skb_set_owner_r(skb, sk); if (!skb_peek(&tp->out_of_order_queue)) { /* Initial out of order segment, build 1 SACK. */ @@ -4079,7 +4079,7 @@ tcp_collapse(struct sock *sk, struct sk_buff_head *list, memcpy(nskb->cb, skb->cb, sizeof(skb->cb)); TCP_SKB_CB(nskb)->seq = TCP_SKB_CB(nskb)->end_seq = start; __skb_insert(nskb, skb->prev, skb, list); - sk_stream_set_owner_r(nskb, sk); + skb_set_owner_r(nskb, sk); /* Copy data, releasing collapsed skbs. */ while (copy > 0) { @@ -4177,7 +4177,7 @@ static int tcp_prune_queue(struct sock *sk) sk->sk_receive_queue.next, (struct sk_buff*)&sk->sk_receive_queue, tp->copied_seq, tp->rcv_nxt); - sk_stream_mem_reclaim(sk); + sk_mem_reclaim(sk); if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf) return 0; @@ -4197,7 +4197,7 @@ static int tcp_prune_queue(struct sock *sk) */ if (tcp_is_sack(tp)) tcp_sack_reset(&tp->rx_opt); - sk_stream_mem_reclaim(sk); + sk_mem_reclaim(sk); } if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf) @@ -4699,7 +4699,7 @@ int tcp_rcv_established(struct sock *sk, struct sk_buff *skb, /* Bulk data transfer: receiver */ __skb_pull(skb,tcp_header_len); __skb_queue_tail(&sk->sk_receive_queue, skb); - sk_stream_set_owner_r(skb, sk); + skb_set_owner_r(skb, sk); tp->rcv_nxt = TCP_SKB_CB(skb)->end_seq; } -- cgit v1.2.2