From 1d9bfacd52ece918b7861e205202912231ca6166 Mon Sep 17 00:00:00 2001 From: Jiapeng Chong Date: Mon, 1 Mar 2021 18:46:02 +0800 Subject: [PATCH 1/3] esp4: Simplify the calculation of variables Fix the following coccicheck warnings: ./net/ipv4/esp4.c:757:16-18: WARNING !A || A && B is equivalent to !A || B. Reported-by: Abaci Robot Signed-off-by: Jiapeng Chong Signed-off-by: Steffen Klassert --- net/ipv4/esp4.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c index a3271ec3e162..804a7698df5b 100644 --- a/net/ipv4/esp4.c +++ b/net/ipv4/esp4.c @@ -754,7 +754,7 @@ int esp_input_done2(struct sk_buff *skb, int err) int hlen = sizeof(struct ip_esp_hdr) + crypto_aead_ivsize(aead); int ihl; - if (!xo || (xo && !(xo->flags & CRYPTO_DONE))) + if (!xo || !(xo->flags & CRYPTO_DONE)) kfree(ESP_SKB_CB(skb)->tmp); if (unlikely(err)) From f076835a8bf2aa6ea48f718e4506587c815ab99f Mon Sep 17 00:00:00 2001 From: Junlin Yang Date: Thu, 11 Mar 2021 10:07:56 +0800 Subject: [PATCH 2/3] esp6: remove a duplicative condition Fixes coccicheck warnings: ./net/ipv6/esp6_offload.c:319:32-34: WARNING !A || A && B is equivalent to !A || B Signed-off-by: Junlin Yang Signed-off-by: Steffen Klassert --- net/ipv6/esp6_offload.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv6/esp6_offload.c b/net/ipv6/esp6_offload.c index 1ca516fb30e1..631c168774f5 100644 --- a/net/ipv6/esp6_offload.c +++ b/net/ipv6/esp6_offload.c @@ -316,7 +316,7 @@ static int esp6_xmit(struct xfrm_state *x, struct sk_buff *skb, netdev_features esp.plen = esp.clen - skb->len - esp.tfclen; esp.tailen = esp.tfclen + esp.plen + alen; - if (!hw_offload || (hw_offload && !skb_is_gso(skb))) { + if (!hw_offload || !skb_is_gso(skb)) { esp.nfrags = esp6_output_head(x, skb, &esp); if (esp.nfrags < 0) return esp.nfrags; From 6ad2dd6c14d3989b44cdc17f1e7258bf613dd070 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 22 Mar 2021 12:56:49 +0100 Subject: [PATCH 3/3] ipv6: fix clang Wformat warning When building with 'make W=1', clang warns about a mismatched format string: net/ipv6/ah6.c:710:4: error: format specifies type 'unsigned short' but the argument has type 'int' [-Werror,-Wformat] aalg_desc->uinfo.auth.icv_fullbits/8); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/printk.h:375:34: note: expanded from macro 'pr_info' printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ net/ipv6/esp6.c:1153:5: error: format specifies type 'unsigned short' but the argument has type 'int' [-Werror,-Wformat] aalg_desc->uinfo.auth.icv_fullbits / 8); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/printk.h:375:34: note: expanded from macro 'pr_info' printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ Here, the result of dividing a 16-bit number by a 32-bit number produces a 32-bit result, which is printed as a 16-bit integer. Change the %hu format to the normal %u, which has the same effect but avoids the warning. Signed-off-by: Arnd Bergmann Signed-off-by: Steffen Klassert --- net/ipv6/ah6.c | 2 +- net/ipv6/esp6.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c index 440080da805b..01c638f5d8b8 100644 --- a/net/ipv6/ah6.c +++ b/net/ipv6/ah6.c @@ -705,7 +705,7 @@ static int ah6_init_state(struct xfrm_state *x) if (aalg_desc->uinfo.auth.icv_fullbits/8 != crypto_ahash_digestsize(ahash)) { - pr_info("AH: %s digestsize %u != %hu\n", + pr_info("AH: %s digestsize %u != %u\n", x->aalg->alg_name, crypto_ahash_digestsize(ahash), aalg_desc->uinfo.auth.icv_fullbits/8); goto error; diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c index 153ad103ba74..831a588b04a2 100644 --- a/net/ipv6/esp6.c +++ b/net/ipv6/esp6.c @@ -1147,7 +1147,7 @@ static int esp_init_authenc(struct xfrm_state *x) err = -EINVAL; if (aalg_desc->uinfo.auth.icv_fullbits / 8 != crypto_aead_authsize(aead)) { - pr_info("ESP: %s digestsize %u != %hu\n", + pr_info("ESP: %s digestsize %u != %u\n", x->aalg->alg_name, crypto_aead_authsize(aead), aalg_desc->uinfo.auth.icv_fullbits / 8);