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Introduce error checking for calls to M_PREPEND():

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ether_output() when prepending netatalk AFA_PHASE2 llc headers (TRYWAIT).
  ether_output() when prepending ethernet header to a frame (DONTWAIT).
This commit is contained in:
Robert Watson 2003-08-29 19:12:18 +00:00
parent 88fced4cb3
commit 2166ffe8e1
1 changed files with 3 additions and 1 deletions
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4
sys/net/if_ethersubr.c
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@ -212,6 +212,8 @@ ether_output(ifp, m, dst, rt0)
struct llc llc;
M_PREPEND(m, LLC_SNAPFRAMELEN, M_TRYWAIT);
if (m == NULL)
senderr(ENOBUFS);
llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP;
llc.llc_control = LLC_UI;
bcopy(at_org_code, llc.llc_snap_org_code, sizeof(at_org_code));
@ -249,7 +251,7 @@ ether_output(ifp, m, dst, rt0)
* allocate another.
*/
M_PREPEND(m, ETHER_HDR_LEN, M_DONTWAIT);
if (m == 0)
if (m == NULL)
senderr(ENOBUFS);
eh = mtod(m, struct ether_header *);
(void)memcpy(&eh->ether_type, &type,