From 25528fdae4abb763c446b2e5081f80ba5a4b6f31 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Wed, 27 May 2015 16:03:48 +0800 Subject: [PATCH] mac802154: Switch to new AEAD interface This patch makes use of the new AEAD interface which uses a single SG list instead of separate lists for the AD and plain text. Signed-off-by: Herbert Xu --- net/mac802154/llsec.c | 41 ++++++++++++++--------------------------- 1 file changed, 14 insertions(+), 27 deletions(-) diff --git a/net/mac802154/llsec.c b/net/mac802154/llsec.c index 3ccf1e9b2229..5210841c3707 100644 --- a/net/mac802154/llsec.c +++ b/net/mac802154/llsec.c @@ -650,7 +650,7 @@ llsec_do_encrypt_auth(struct sk_buff *skb, const struct mac802154_llsec *sec, u8 iv[16]; unsigned char *data; int authlen, assoclen, datalen, rc; - struct scatterlist src, assoc[2], dst[2]; + struct scatterlist sg; struct aead_request *req; authlen = ieee802154_sechdr_authtag_len(&hdr->sec); @@ -660,30 +660,23 @@ llsec_do_encrypt_auth(struct sk_buff *skb, const struct mac802154_llsec *sec, if (!req) return -ENOMEM; - sg_init_table(assoc, 2); - sg_set_buf(&assoc[0], skb_mac_header(skb), skb->mac_len); assoclen = skb->mac_len; data = skb_mac_header(skb) + skb->mac_len; datalen = skb_tail_pointer(skb) - data; - if (hdr->sec.level & IEEE802154_SCF_SECLEVEL_ENC) { - sg_set_buf(&assoc[1], data, 0); - } else { - sg_set_buf(&assoc[1], data, datalen); + skb_put(skb, authlen); + + sg_init_one(&sg, skb_mac_header(skb), assoclen + datalen + authlen); + + if (!(hdr->sec.level & IEEE802154_SCF_SECLEVEL_ENC)) { assoclen += datalen; datalen = 0; } - sg_init_one(&src, data, datalen); - - sg_init_table(dst, 2); - sg_set_buf(&dst[0], data, datalen); - sg_set_buf(&dst[1], skb_put(skb, authlen), authlen); - aead_request_set_callback(req, 0, NULL, NULL); - aead_request_set_assoc(req, assoc, assoclen); - aead_request_set_crypt(req, &src, dst, datalen, iv); + aead_request_set_crypt(req, &sg, &sg, datalen, iv); + aead_request_set_ad(req, assoclen); rc = crypto_aead_encrypt(req); @@ -859,7 +852,7 @@ llsec_do_decrypt_auth(struct sk_buff *skb, const struct mac802154_llsec *sec, u8 iv[16]; unsigned char *data; int authlen, datalen, assoclen, rc; - struct scatterlist src, assoc[2]; + struct scatterlist sg; struct aead_request *req; authlen = ieee802154_sechdr_authtag_len(&hdr->sec); @@ -869,27 +862,21 @@ llsec_do_decrypt_auth(struct sk_buff *skb, const struct mac802154_llsec *sec, if (!req) return -ENOMEM; - sg_init_table(assoc, 2); - sg_set_buf(&assoc[0], skb_mac_header(skb), skb->mac_len); assoclen = skb->mac_len; data = skb_mac_header(skb) + skb->mac_len; datalen = skb_tail_pointer(skb) - data; - if (hdr->sec.level & IEEE802154_SCF_SECLEVEL_ENC) { - sg_set_buf(&assoc[1], data, 0); - } else { - sg_set_buf(&assoc[1], data, datalen - authlen); + sg_init_one(&sg, skb_mac_header(skb), assoclen + datalen); + + if (!(hdr->sec.level & IEEE802154_SCF_SECLEVEL_ENC)) { assoclen += datalen - authlen; - data += datalen - authlen; datalen = authlen; } - sg_init_one(&src, data, datalen); - aead_request_set_callback(req, 0, NULL, NULL); - aead_request_set_assoc(req, assoc, assoclen); - aead_request_set_crypt(req, &src, &src, datalen, iv); + aead_request_set_crypt(req, &sg, &sg, datalen, iv); + aead_request_set_ad(req, assoclen); rc = crypto_aead_decrypt(req); -- 2.20.1