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route/cls: support setting of selector fields

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Enables to set the shift, offset, mask and flags of the position to next header

http://lists.infradead.org/pipermail/libnl/2016-September/002227.html
http://lists.infradead.org/pipermail/libnl/2016-October/002232.html

Signed-off-by: Sushma Sitaram <sushma.sitaram@intel.com>
Signed-off-by: Thomas Haller <thaller@redhat.com>
This commit is contained in:
Sushma Sitaram 2016-10-21 14:06:39 -07:00 committed by Thomas Haller
parent 306695fb07
commit 90680e024b
3 changed files with 32 additions and 0 deletions
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1
include/netlink/route/cls/u32.h
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@ -28,6 +28,7 @@ extern int rtnl_u32_set_divisor(struct rtnl_cls *, uint32_t);
extern int rtnl_u32_set_link(struct rtnl_cls *, uint32_t);
extern int rtnl_u32_set_hashtable(struct rtnl_cls *, uint32_t);
extern int rtnl_u32_set_hashmask(struct rtnl_cls *, uint32_t, uint32_t);
extern int rtnl_u32_set_selector(struct rtnl_cls *, int, uint32_t, char, uint16_t, char);
extern int rtnl_u32_set_cls_terminal(struct rtnl_cls *);
extern int rtnl_u32_set_flags(struct rtnl_cls *, int);

30
lib/route/cls/u32.c
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@ -491,6 +491,36 @@ int rtnl_u32_set_hashmask(struct rtnl_cls *cls, uint32_t hashmask, uint32_t offs
return 0;
}
int rtnl_u32_set_selector(struct rtnl_cls *cls, int offoff, uint32_t offmask, char offshift, uint16_t off, char flags)
{
struct rtnl_u32 *u;
struct tc_u32_sel *sel;
int err;
offmask = ntohs(offmask);
if (!(u = (struct rtnl_u32 *) rtnl_tc_data(TC_CAST(cls))))
return -NLE_NOMEM;
sel = u32_selector_alloc(u);
if (!sel)
return -NLE_NOMEM;
err = nl_data_append(u->cu_selector, NULL, sizeof(struct tc_u32_key));
if(err < 0)
return err;
sel = u32_selector(u);
sel->offoff = offoff;
sel->offmask = offmask;
sel->offshift = offshift;
sel->flags |= TC_U32_VAROFFSET;
sel->off = off;
sel->flags |= flags;
return 0;
}
int rtnl_u32_set_cls_terminal(struct rtnl_cls *cls)
{
struct rtnl_u32 *u;

1
libnl-route-3.sym
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@ -1022,5 +1022,6 @@ global:
rtnl_link_vf_vlanproto2str;
rtnl_link_vf_str2vlanproto;
rtnl_link_vf_str2guid;
rtnl_u32_set_selector;
} libnl_3_2_28;