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STABLE14-linux-reduce-stack-use-20050726

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FIXES 20337

don't do pointless work in osi_NetSend, and save some stack


(cherry picked from commit a21fc56daf70d0433276eab29798542f6ef362ad)
This commit is contained in:
Chas Williams 2005-07-26 18:42:25 +00:00 committed by Derrick Brashear
parent 87dbfa307a
commit 58bb7856fb
1 changed files with 3 additions and 15 deletions
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18
src/rx/LINUX/rx_knet.c
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@ -95,27 +95,15 @@ rxk_FreeSocket(register struct socket *asocket)
* non-zero = failure * non-zero = failure
*/ */
int int
osi_NetSend(osi_socket sop, struct sockaddr_in *to, struct iovec *iov, osi_NetSend(osi_socket sop, struct sockaddr_in *to, struct iovec *iovec,
int iovcnt, afs_int32 size, int istack) int iovcnt, afs_int32 size, int istack)
{ {
KERNEL_SPACE_DECL; KERNEL_SPACE_DECL;
struct msghdr msg; struct msghdr msg;
int code; int code;
struct iovec tmpvec[RX_MAXWVECS + 2];
if (iovcnt > RX_MAXWVECS + 2) { msg.msg_iovlen = iovcnt;
osi_Panic("Too many (%d) iovecs passed to osi_NetSend\n", iovcnt); msg.msg_iov = iovec;
}
if (iovcnt <= 2) { /* avoid pointless uiomove */
tmpvec[0].iov_base = iov[0].iov_base;
tmpvec[0].iov_len = size;
msg.msg_iovlen = 1;
} else {
memcpy(tmpvec, iov, iovcnt * sizeof(struct iovec));
msg.msg_iovlen = iovcnt;
}
msg.msg_iov = tmpvec;
msg.msg_name = to; msg.msg_name = to;
msg.msg_namelen = sizeof(*to); msg.msg_namelen = sizeof(*to);
msg.msg_control = NULL; msg.msg_control = NULL;