diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c index b11355e00514..916c3c0a99f0 100644 --- a/net/tls/tls_device.c +++ b/net/tls/tls_device.c @@ -256,29 +256,13 @@ static int tls_push_record(struct sock *sk, struct tls_context *ctx, struct tls_offload_context_tx *offload_ctx, struct tls_record_info *record, - struct page_frag *pfrag, - int flags, - unsigned char record_type) + int flags) { struct tls_prot_info *prot = &ctx->prot_info; struct tcp_sock *tp = tcp_sk(sk); - struct page_frag dummy_tag_frag; skb_frag_t *frag; int i; - /* fill prepend */ - frag = &record->frags[0]; - tls_fill_prepend(ctx, - skb_frag_address(frag), - record->len - prot->prepend_size, - record_type, - prot->version); - - /* HW doesn't care about the data in the tag, because it fills it. */ - dummy_tag_frag.page = skb_frag_page(frag); - dummy_tag_frag.offset = 0; - - tls_append_frag(record, &dummy_tag_frag, prot->tag_size); record->end_seq = tp->write_seq + record->len; list_add_tail_rcu(&record->list, &offload_ctx->records_list); offload_ctx->open_record = NULL; @@ -302,6 +286,38 @@ static int tls_push_record(struct sock *sk, return tls_push_sg(sk, ctx, offload_ctx->sg_tx_data, 0, flags); } +static int tls_device_record_close(struct sock *sk, + struct tls_context *ctx, + struct tls_record_info *record, + struct page_frag *pfrag, + unsigned char record_type) +{ + struct tls_prot_info *prot = &ctx->prot_info; + int ret; + + /* append tag + * device will fill in the tag, we just need to append a placeholder + * use socket memory to improve coalescing (re-using a single buffer + * increases frag count) + * if we can't allocate memory now, steal some back from data + */ + if (likely(skb_page_frag_refill(prot->tag_size, pfrag, + sk->sk_allocation))) { + ret = 0; + tls_append_frag(record, pfrag, prot->tag_size); + } else { + ret = prot->tag_size; + if (record->len <= prot->overhead_size) + return -ENOMEM; + } + + /* fill prepend */ + tls_fill_prepend(ctx, skb_frag_address(&record->frags[0]), + record->len - prot->overhead_size, + record_type, prot->version); + return ret; +} + static int tls_create_new_record(struct tls_offload_context_tx *offload_ctx, struct page_frag *pfrag, size_t prepend_size) @@ -452,13 +468,24 @@ last_record: if (done || record->len >= max_open_record_len || (record->num_frags >= MAX_SKB_FRAGS - 1)) { + rc = tls_device_record_close(sk, tls_ctx, record, + pfrag, record_type); + if (rc) { + if (rc > 0) { + size += rc; + } else { + size = orig_size; + destroy_record(record); + ctx->open_record = NULL; + break; + } + } + rc = tls_push_record(sk, tls_ctx, ctx, record, - pfrag, - tls_push_record_flags, - record_type); + tls_push_record_flags); if (rc < 0) break; }