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rxrpc: Drop channel number field from rxrpc_call struct

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Drop the channel number (channel) field from the rxrpc_call struct to
reduce the size of the call struct.  The field is redundant: if the call is
attached to a connection, the channel can be obtained from there by AND'ing
with RXRPC_CHANNELMASK.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells
2016-08-23 15:27:24 +01:00
parent f36b5e444c
commit 01a90a4598
5 changed files with 8 additions and 10 deletions
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4
net/rxrpc/rxkad.c
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@@ -275,7 +275,7 @@ static int rxkad_secure_packet(struct rxrpc_call *call,
memcpy(&iv, call->conn->csum_iv.x, sizeof(iv));
/* calculate the security checksum */
x = call->channel << (32 - RXRPC_CIDSHIFT);
x = (call->cid & RXRPC_CHANNELMASK) << (32 - RXRPC_CIDSHIFT);
x |= sp->hdr.seq & 0x3fffffff;
call->crypto_buf[0] = htonl(sp->hdr.callNumber);
call->crypto_buf[1] = htonl(x);
@@ -507,7 +507,7 @@ static int rxkad_verify_packet(struct rxrpc_call *call,
memcpy(&iv, call->conn->csum_iv.x, sizeof(iv));
/* validate the security checksum */
x = call->channel << (32 - RXRPC_CIDSHIFT);
x = (call->cid & RXRPC_CHANNELMASK) << (32 - RXRPC_CIDSHIFT);
x |= sp->hdr.seq & 0x3fffffff;
call->crypto_buf[0] = htonl(call->call_id);
call->crypto_buf[1] = htonl(x);