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sfxge: skip VPD info population if access is denied

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The patch allows to run on unprivileged PF (PFIOV) passed to
a virtual machine.

Reviewed by:    gnn
Sponsored by:   Solarflare Communications, Inc.
MFC after:      2 days
Differential Revision: https://reviews.freebsd.org/D2891
This commit is contained in:
arybchik 2015-06-24 06:25:20 +00:00
parent 71f5e47790
commit 667a1955d0
1 changed files with 9 additions and 1 deletions
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10
sys/dev/sfxge/sfxge.c
View File

@ -905,8 +905,15 @@ sfxge_vpd_init(struct sfxge_softc *sc)
efx_vpd_value_t value;
int rc;
if ((rc = efx_vpd_size(sc->enp, &sc->vpd_size)) != 0)
if ((rc = efx_vpd_size(sc->enp, &sc->vpd_size)) != 0) {
/*
* Unpriviledged functions deny VPD access.
* Simply skip VPD in this case.
*/
if (rc == EACCES)
goto done;
goto fail;
}
sc->vpd_data = malloc(sc->vpd_size, M_SFXGE, M_WAITOK);
if ((rc = efx_vpd_read(sc->enp, sc->vpd_data, sc->vpd_size)) != 0)
goto fail2;
@ -935,6 +942,7 @@ sfxge_vpd_init(struct sfxge_softc *sc)
for (keyword[1] = 'A'; keyword[1] <= 'Z'; keyword[1]++)
sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword);
done:
return (0);
fail2: