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| author | Ayush Sawal <ayush.sawal@chelsio.com> | 2020-06-01 19:41:58 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-06-02 00:50:26 +0200 |
| commit | f3b140ad8575b74c78be50f34079e1cf43b0302d (patch) | |
| tree | 98bc6176fab4399996d86f6b17d06b1b288b7ccb /drivers/crypto | |
| parent | crypto/chcr: IPV6 code needs to be in CONFIG_IPV6 (diff) | |
| download | linux-f3b140ad8575b74c78be50f34079e1cf43b0302d.tar.xz linux-f3b140ad8575b74c78be50f34079e1cf43b0302d.zip | |
Crypto/chcr: Fixes compilations warnings
This patch fixes the compilation warnings displayed by sparse tool for
chcr driver.
V1->V2
Avoid type casting by using get_unaligned_be32() and
put_unaligned_be16/32() functions.
The key which comes from stack is an u8 byte stream so we store it in
an unsigned char array(ablkctx->key). The function get_aes_decrypt_key()
is a used to calculate the reverse round key for decryption, for this
operation the key has to be divided into 4 bytes, so to extract 4 bytes
from an u8 byte stream and store it in an u32 variable, get_aligned_be32()
is used. Similarly for copying back the key from u32 variable to the
original u8 key stream, put_aligned_be32() is used.
Signed-off-by: Ayush Sawal <ayush.sawal@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/chelsio/chcr_algo.c | 10 | ||||
| -rw-r--r-- | drivers/crypto/chelsio/chcr_ipsec.c | 2 |
2 files changed, 5 insertions, 7 deletions
diff --git a/drivers/crypto/chelsio/chcr_algo.c b/drivers/crypto/chelsio/chcr_algo.c index b8c1c4dd3ef0..94cf04e5aacf 100644 --- a/drivers/crypto/chelsio/chcr_algo.c +++ b/drivers/crypto/chelsio/chcr_algo.c @@ -256,7 +256,7 @@ static void get_aes_decrypt_key(unsigned char *dec_key, return; } for (i = 0; i < nk; i++) - w_ring[i] = be32_to_cpu(*(u32 *)&key[4 * i]); + w_ring[i] = get_unaligned_be32(&key[i * 4]); i = 0; temp = w_ring[nk - 1]; @@ -275,7 +275,7 @@ static void get_aes_decrypt_key(unsigned char *dec_key, } i--; for (k = 0, j = i % nk; k < nk; k++) { - *((u32 *)dec_key + k) = htonl(w_ring[j]); + put_unaligned_be32(w_ring[j], &dec_key[k * 4]); j--; if (j < 0) j += nk; @@ -2926,8 +2926,7 @@ static int ccm_format_packet(struct aead_request *req, memcpy(ivptr, req->iv, 16); } if (assoclen) - *((unsigned short *)(reqctx->scratch_pad + 16)) = - htons(assoclen); + put_unaligned_be16(assoclen, &reqctx->scratch_pad[16]); rc = generate_b0(req, ivptr, op_type); /* zero the ctr value */ @@ -3201,8 +3200,7 @@ static struct sk_buff *create_gcm_wr(struct aead_request *req, } else { memcpy(ivptr, req->iv, GCM_AES_IV_SIZE); } - *((unsigned int *)(ivptr + 12)) = htonl(0x01); - + put_unaligned_be32(0x01, &ivptr[12]); ulptx = (struct ulptx_sgl *)(ivptr + 16); chcr_add_aead_dst_ent(req, phys_cpl, qid); diff --git a/drivers/crypto/chelsio/chcr_ipsec.c b/drivers/crypto/chelsio/chcr_ipsec.c index d25689837b26..3a10f51ad6fd 100644 --- a/drivers/crypto/chelsio/chcr_ipsec.c +++ b/drivers/crypto/chelsio/chcr_ipsec.c @@ -403,7 +403,7 @@ inline void *copy_esn_pktxt(struct sk_buff *skb, xo = xfrm_offload(skb); aadiv->spi = (esphdr->spi); - seqlo = htonl(esphdr->seq_no); + seqlo = ntohl(esphdr->seq_no); seqno = cpu_to_be64(seqlo + ((u64)xo->seq.hi << 32)); memcpy(aadiv->seq_no, &seqno, 8); iv = skb_transport_header(skb) + sizeof(struct ip_esp_hdr); |