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Crypto/chcr: Fixes compilations warnings

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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>
This commit is contained in:
Ayush Sawal
2020-06-01 23:11:58 +05:30
committed by David S. Miller
parent 76d7728db7
commit f3b140ad85
2 changed files with 5 additions and 7 deletions
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2
drivers/crypto/chelsio/chcr_ipsec.c
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@@ -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);