net: cleanup unsigned to unsigned int

[karo-tx-linux.git] / net / ipv4 / tcp.c

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index cfd7edda0a8eb6e8dd908a1bc5c309225c4ce495..c53e8a827f5500fb6859d51511131d5b53ed8b4b 100644 (file)
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -701,11 +701,12 @@ struct sk_buff *sk_stream_alloc_skb(struct sock *sk, int size, gfp_t gfp)
        skb = alloc_skb_fclone(size + sk->sk_prot->max_header, gfp);
        if (skb) {
                if (sk_wmem_schedule(sk, skb->truesize)) {
+                       skb_reserve(skb, sk->sk_prot->max_header);
                        /*
                         * Make sure that we have exactly size bytes
                         * available to the caller, no more, no less.
                         */
-                       skb_reserve(skb, skb_tailroom(skb) - size);
+                       skb->avail_size = size;
                        return skb;
                }
                __kfree_skb(skb);
@@ -860,7 +861,7 @@ wait_for_memory:
        }
 
 out:
-       if (copied)
+       if (copied && !(flags & MSG_SENDPAGE_NOTLAST))
                tcp_push(sk, flags, mss_now, tp->nonagle);
        return copied;
 
@@ -995,10 +996,9 @@ new_segment:
                                copy = seglen;
 
                        /* Where to copy to? */
-                       if (skb_tailroom(skb) > 0) {
+                       if (skb_availroom(skb) > 0) {
                                /* We have some space in skb head. Superb! */
-                               if (copy > skb_tailroom(skb))
-                                       copy = skb_tailroom(skb);
+                               copy = min_t(int, copy, skb_availroom(skb));
                                err = skb_add_data_nocache(sk, skb, from, copy);
                                if (err)
                                        goto do_fault;
@@ -1452,7 +1452,7 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
                if ((available < target) &&
                    (len > sysctl_tcp_dma_copybreak) && !(flags & MSG_PEEK) &&
                    !sysctl_tcp_low_latency &&
-                   dma_find_channel(DMA_MEMCPY)) {
+                   net_dma_find_channel()) {
                        preempt_enable_no_resched();
                        tp->ucopy.pinned_list =
                                        dma_pin_iovec_pages(msg->msg_iov, len);
@@ -1667,7 +1667,7 @@ do_prequeue:
                if (!(flags & MSG_TRUNC)) {
 #ifdef CONFIG_NET_DMA
                        if (!tp->ucopy.dma_chan && tp->ucopy.pinned_list)
-                               tp->ucopy.dma_chan = dma_find_channel(DMA_MEMCPY);
+                               tp->ucopy.dma_chan = net_dma_find_channel();
 
                        if (tp->ucopy.dma_chan) {
                                tp->ucopy.dma_cookie = dma_skb_copy_datagram_iovec(
@@ -2675,7 +2675,7 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb,
 {
        struct sk_buff *segs = ERR_PTR(-EINVAL);
        struct tcphdr *th;
-       unsigned thlen;
+       unsigned int thlen;
        unsigned int seq;
        __be32 delta;
        unsigned int oldlen;
@@ -3033,9 +3033,9 @@ int tcp_md5_hash_skb_data(struct tcp_md5sig_pool *hp,
        struct scatterlist sg;
        const struct tcphdr *tp = tcp_hdr(skb);
        struct hash_desc *desc = &hp->md5_desc;
-       unsigned i;
-       const unsigned head_data_len = skb_headlen(skb) > header_len ?
-                                      skb_headlen(skb) - header_len : 0;
+       unsigned int i;
+       const unsigned int head_data_len = skb_headlen(skb) > header_len ?
+                                          skb_headlen(skb) - header_len : 0;
        const struct skb_shared_info *shi = skb_shinfo(skb);
        struct sk_buff *frag_iter;
 
@@ -3302,8 +3302,7 @@ void __init tcp_init(void)
 
        tcp_init_mem(&init_net);
        /* Set per-socket limits to no more than 1/128 the pressure threshold */
-       limit = nr_free_buffer_pages() << (PAGE_SHIFT - 10);
-       limit = max(limit, 128UL);
+       limit = nr_free_buffer_pages() << (PAGE_SHIFT - 7);
        max_share = min(4UL*1024*1024, limit);
 
        sysctl_tcp_wmem[0] = SK_MEM_QUANTUM;