diff options
Diffstat (limited to 'net/ipv4/tcp.c')
| -rw-r--r-- | net/ipv4/tcp.c | 57 |
1 files changed, 36 insertions, 21 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index fd17eec93525..4804645bdf02 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -247,6 +247,7 @@ #define pr_fmt(fmt) "TCP: " fmt +#include <crypto/hash.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/types.h> @@ -266,7 +267,6 @@ #include <linux/swap.h> #include <linux/cache.h> #include <linux/err.h> -#include <linux/crypto.h> #include <linux/time.h> #include <linux/slab.h> @@ -279,6 +279,7 @@ #include <asm/uaccess.h> #include <asm/ioctls.h> +#include <asm/unaligned.h> #include <net/busy_poll.h> int sysctl_tcp_fin_timeout __read_mostly = TCP_FIN_TIMEOUT; @@ -939,7 +940,7 @@ new_segment: i = skb_shinfo(skb)->nr_frags; can_coalesce = skb_can_coalesce(skb, i, page, offset); - if (!can_coalesce && i >= MAX_SKB_FRAGS) { + if (!can_coalesce && i >= sysctl_max_skb_frags) { tcp_mark_push(tp, skb); goto new_segment; } @@ -1212,7 +1213,7 @@ new_segment: if (!skb_can_coalesce(skb, i, pfrag->page, pfrag->offset)) { - if (i == MAX_SKB_FRAGS || !sg) { + if (i == sysctl_max_skb_frags || !sg) { tcp_mark_push(tp, skb); goto new_segment; } @@ -2638,6 +2639,7 @@ void tcp_get_info(struct sock *sk, struct tcp_info *info) const struct inet_connection_sock *icsk = inet_csk(sk); u32 now = tcp_time_stamp; unsigned int start; + u64 rate64; u32 rate; memset(info, 0, sizeof(*info)); @@ -2703,15 +2705,17 @@ void tcp_get_info(struct sock *sk, struct tcp_info *info) info->tcpi_total_retrans = tp->total_retrans; rate = READ_ONCE(sk->sk_pacing_rate); - info->tcpi_pacing_rate = rate != ~0U ? rate : ~0ULL; + rate64 = rate != ~0U ? rate : ~0ULL; + put_unaligned(rate64, &info->tcpi_pacing_rate); rate = READ_ONCE(sk->sk_max_pacing_rate); - info->tcpi_max_pacing_rate = rate != ~0U ? rate : ~0ULL; + rate64 = rate != ~0U ? rate : ~0ULL; + put_unaligned(rate64, &info->tcpi_max_pacing_rate); do { start = u64_stats_fetch_begin_irq(&tp->syncp); - info->tcpi_bytes_acked = tp->bytes_acked; - info->tcpi_bytes_received = tp->bytes_received; + put_unaligned(tp->bytes_acked, &info->tcpi_bytes_acked); + put_unaligned(tp->bytes_received, &info->tcpi_bytes_received); } while (u64_stats_fetch_retry_irq(&tp->syncp, start)); info->tcpi_segs_out = tp->segs_out; info->tcpi_segs_in = tp->segs_in; @@ -2939,17 +2943,26 @@ static bool tcp_md5sig_pool_populated = false; static void __tcp_alloc_md5sig_pool(void) { + struct crypto_ahash *hash; int cpu; + hash = crypto_alloc_ahash("md5", 0, CRYPTO_ALG_ASYNC); + if (IS_ERR(hash)) + return; + for_each_possible_cpu(cpu) { - if (!per_cpu(tcp_md5sig_pool, cpu).md5_desc.tfm) { - struct crypto_hash *hash; + struct ahash_request *req; - hash = crypto_alloc_hash("md5", 0, CRYPTO_ALG_ASYNC); - if (IS_ERR_OR_NULL(hash)) - return; - per_cpu(tcp_md5sig_pool, cpu).md5_desc.tfm = hash; - } + if (per_cpu(tcp_md5sig_pool, cpu).md5_req) + continue; + + req = ahash_request_alloc(hash, GFP_KERNEL); + if (!req) + return; + + ahash_request_set_callback(req, 0, NULL, NULL); + + per_cpu(tcp_md5sig_pool, cpu).md5_req = req; } /* before setting tcp_md5sig_pool_populated, we must commit all writes * to memory. See smp_rmb() in tcp_get_md5sig_pool() @@ -2999,7 +3012,6 @@ int tcp_md5_hash_header(struct tcp_md5sig_pool *hp, { struct scatterlist sg; struct tcphdr hdr; - int err; /* We are not allowed to change tcphdr, make a local copy */ memcpy(&hdr, th, sizeof(hdr)); @@ -3007,8 +3019,8 @@ int tcp_md5_hash_header(struct tcp_md5sig_pool *hp, /* options aren't included in the hash */ sg_init_one(&sg, &hdr, sizeof(hdr)); - err = crypto_hash_update(&hp->md5_desc, &sg, sizeof(hdr)); - return err; + ahash_request_set_crypt(hp->md5_req, &sg, NULL, sizeof(hdr)); + return crypto_ahash_update(hp->md5_req); } EXPORT_SYMBOL(tcp_md5_hash_header); @@ -3017,7 +3029,7 @@ 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; + struct ahash_request *req = hp->md5_req; unsigned int i; const unsigned int head_data_len = skb_headlen(skb) > header_len ? skb_headlen(skb) - header_len : 0; @@ -3027,7 +3039,8 @@ int tcp_md5_hash_skb_data(struct tcp_md5sig_pool *hp, sg_init_table(&sg, 1); sg_set_buf(&sg, ((u8 *) tp) + header_len, head_data_len); - if (crypto_hash_update(desc, &sg, head_data_len)) + ahash_request_set_crypt(req, &sg, NULL, head_data_len); + if (crypto_ahash_update(req)) return 1; for (i = 0; i < shi->nr_frags; ++i) { @@ -3037,7 +3050,8 @@ int tcp_md5_hash_skb_data(struct tcp_md5sig_pool *hp, sg_set_page(&sg, page, skb_frag_size(f), offset_in_page(offset)); - if (crypto_hash_update(desc, &sg, skb_frag_size(f))) + ahash_request_set_crypt(req, &sg, NULL, skb_frag_size(f)); + if (crypto_ahash_update(req)) return 1; } @@ -3054,7 +3068,8 @@ int tcp_md5_hash_key(struct tcp_md5sig_pool *hp, const struct tcp_md5sig_key *ke struct scatterlist sg; sg_init_one(&sg, key->key, key->keylen); - return crypto_hash_update(&hp->md5_desc, &sg, key->keylen); + ahash_request_set_crypt(hp->md5_req, &sg, NULL, key->keylen); + return crypto_ahash_update(hp->md5_req); } EXPORT_SYMBOL(tcp_md5_hash_key); |