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netmap: monitor: support offsets in copy mode

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This commit is contained in:
Vincenzo Maffione 2021-09-26 13:52:16 +00:00
parent f7cef43aa9
commit 6127ce9d91
1 changed files with 7 additions and 5 deletions
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12
sys/dev/netmap/netmap_monitor.c
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@ -737,8 +737,7 @@ netmap_monitor_parent_sync(struct netmap_kring *kring, u_int first_new, int new_
int free_slots, busy, sent = 0, m;
u_int lim = kring->nkr_num_slots - 1;
struct netmap_ring *ring = kring->ring, *mring = mkring->ring;
u_int max_len = NETMAP_BUF_SIZE(mkring->na);
u_int max_len;
mlim = mkring->nkr_num_slots - 1;
/* we need to lock the monitor receive ring, since it
@ -770,9 +769,10 @@ netmap_monitor_parent_sync(struct netmap_kring *kring, u_int first_new, int new_
struct netmap_slot *s = &ring->slot[beg];
struct netmap_slot *ms = &mring->slot[i];
u_int copy_len = s->len;
char *src = NMB(kring->na, s),
*dst = NMB(mkring->na, ms);
char *src = NMB_O(kring, s),
*dst = NMB_O(mkring, ms);
max_len = NETMAP_BUF_SIZE(mkring->na) - nm_get_offset(mkring, ms);
if (unlikely(copy_len > max_len)) {
nm_prlim(5, "%s->%s: truncating %d to %d", kring->name,
mkring->name, copy_len, max_len);
@ -966,7 +966,9 @@ netmap_get_monitor_na(struct nmreq_header *hdr, struct netmap_adapter **na,
pna->monitor_id++);
/* the monitor supports the host rings iff the parent does */
mna->up.na_flags |= (pna->na_flags & NAF_HOST_RINGS);
mna->up.na_flags |= (pna->na_flags & NAF_HOST_RINGS) & ~NAF_OFFSETS;
if (!zcopy)
mna->up.na_flags |= NAF_OFFSETS;
/* a do-nothing txsync: monitors cannot be used to inject packets */
mna->up.nm_txsync = netmap_monitor_txsync;
mna->up.nm_rxsync = netmap_monitor_rxsync;