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iflib: netmap: drop redundant check

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The validity of head is already checked by nm_rxsync_prologue().

MFC after:	2 weeks
This commit is contained in:
vmaffione 2020-08-06 21:37:38 +00:00
parent ab05ced423
commit 0d9de3fbf2
1 changed files with 0 additions and 4 deletions
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4
sys/net/iflib.c
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@ -1080,7 +1080,6 @@ iflib_netmap_rxsync(struct netmap_kring *kring, int flags)
uint32_t nic_i; /* index into the NIC ring */
u_int n;
u_int const lim = kring->nkr_num_slots - 1;
u_int const head = kring->rhead;
int force_update = (flags & NAF_FORCE_READ) || kring->nr_kflags & NKR_PENDINTR;
if_ctx_t ctx = ifp->if_softc;
@ -1088,9 +1087,6 @@ iflib_netmap_rxsync(struct netmap_kring *kring, int flags)
iflib_fl_t fl = &rxq->ifr_fl[0];
struct if_rxd_info ri;
if (head > lim)
return netmap_ring_reinit(kring);
/*
* netmap only uses free list 0, to avoid out of order consumption
* of receive buffers