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zebra: prepare dplane to deal with pbr rules

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This commit is the first step to convert IP rule installation to
use dplane thread.
 * Add dataplane's internal representation of a pbr rule
 * Add dplane stats related to rules
 * Introduce a new type of dplane operation

Signed-off-by: Jakub Urbańczyk <xthaid@gmail.com>
This commit is contained in:
Jakub Urbańczyk 2020-05-24 18:44:36 +02:00
parent 71af56b190
commit 60d8d43be4
3 changed files with 193 additions and 0 deletions
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164
zebra/zebra_dplane.c
View File

@ -191,6 +191,36 @@ struct dplane_neigh_info {
uint16_t state;
};
/*
* Policy based routing rule info for the dataplane
*/
struct dplane_ctx_rule {
uint32_t priority;
/* The route table pointed by this rule */
uint32_t table;
/* Filter criteria */
uint32_t filter_bm;
uint32_t fwmark;
struct prefix src_ip;
struct prefix dst_ip;
};
struct dplane_rule_info {
/*
* Originating zclient sock fd, so we can know who to send
* back to.
*/
int sock;
int unique;
int seq;
struct dplane_ctx_rule new;
struct dplane_ctx_rule old;
};
/*
* The context block used to exchange info about route updates across
* the boundary between the zebra main context (and pthread) and the
@ -238,6 +268,7 @@ struct zebra_dplane_ctx {
struct dplane_intf_info intf;
struct dplane_mac_info macinfo;
struct dplane_neigh_info neigh;
struct dplane_rule_info rule;
} u;
/* Namespace info, used especially for netlink kernel communication */
@ -361,6 +392,9 @@ static struct zebra_dplane_globals {
_Atomic uint32_t dg_neighs_in;
_Atomic uint32_t dg_neigh_errors;
_Atomic uint32_t dg_rules_in;
_Atomic uint32_t dg_rule_errors;
_Atomic uint32_t dg_update_yields;
/* Dataplane pthread */
@ -564,6 +598,9 @@ static void dplane_ctx_free_internal(struct zebra_dplane_ctx *ctx)
case DPLANE_OP_NEIGH_DELETE:
case DPLANE_OP_VTEP_ADD:
case DPLANE_OP_VTEP_DELETE:
case DPLANE_OP_RULE_ADD:
case DPLANE_OP_RULE_DELETE:
case DPLANE_OP_RULE_UPDATE:
case DPLANE_OP_NONE:
break;
}
@ -786,6 +823,16 @@ const char *dplane_op2str(enum dplane_op_e op)
case DPLANE_OP_VTEP_DELETE:
ret = "VTEP_DELETE";
break;
case DPLANE_OP_RULE_ADD:
ret = "RULE_ADD";
break;
case DPLANE_OP_RULE_DELETE:
ret = "RULE_DELETE";
break;
case DPLANE_OP_RULE_UPDATE:
ret = "RULE_UPDATE";
break;
}
return ret;
@ -1517,6 +1564,116 @@ uint16_t dplane_ctx_neigh_get_state(const struct zebra_dplane_ctx *ctx)
return ctx->u.neigh.state;
}
/* Accessors for PBR rule information */
int dplane_ctx_rule_get_sock(const struct zebra_dplane_ctx *ctx)
{
DPLANE_CTX_VALID(ctx);
return ctx->u.rule.sock;
}
int dplane_ctx_rule_get_unique(const struct zebra_dplane_ctx *ctx)
{
DPLANE_CTX_VALID(ctx);
return ctx->u.rule.unique;
}
int dplane_ctx_rule_get_seq(const struct zebra_dplane_ctx *ctx)
{
DPLANE_CTX_VALID(ctx);
return ctx->u.rule.seq;
}
uint32_t dplane_ctx_rule_get_priority(const struct zebra_dplane_ctx *ctx)
{
DPLANE_CTX_VALID(ctx);
return ctx->u.rule.new.priority;
}
uint32_t dplane_ctx_rule_get_old_priority(const struct zebra_dplane_ctx *ctx)
{
DPLANE_CTX_VALID(ctx);
return ctx->u.rule.old.priority;
}
uint32_t dplane_ctx_rule_get_table(const struct zebra_dplane_ctx *ctx)
{
DPLANE_CTX_VALID(ctx);
return ctx->u.rule.new.table;
}
uint32_t dplane_ctx_rule_get_old_table(const struct zebra_dplane_ctx *ctx)
{
DPLANE_CTX_VALID(ctx);
return ctx->u.rule.old.table;
}
uint32_t dplane_ctx_rule_get_filter_bm(const struct zebra_dplane_ctx *ctx)
{
DPLANE_CTX_VALID(ctx);
return ctx->u.rule.new.filter_bm;
}
uint32_t dplane_ctx_rule_get_old_filter_bm(const struct zebra_dplane_ctx *ctx)
{
DPLANE_CTX_VALID(ctx);
return ctx->u.rule.old.filter_bm;
}
uint32_t dplane_ctx_rule_get_fwmark(const struct zebra_dplane_ctx *ctx)
{
DPLANE_CTX_VALID(ctx);
return ctx->u.rule.new.fwmark;
}
uint32_t dplane_ctx_rule_get_old_fwmark(const struct zebra_dplane_ctx *ctx)
{
DPLANE_CTX_VALID(ctx);
return ctx->u.rule.old.fwmark;
}
const struct prefix *
dplane_ctx_rule_get_src_ip(const struct zebra_dplane_ctx *ctx)
{
DPLANE_CTX_VALID(ctx);
return &(ctx->u.rule.new.src_ip);
}
const struct prefix *
dplane_ctx_rule_get_old_src_ip(const struct zebra_dplane_ctx *ctx)
{
DPLANE_CTX_VALID(ctx);
return &(ctx->u.rule.old.src_ip);
}
const struct prefix *
dplane_ctx_rule_get_dst_ip(const struct zebra_dplane_ctx *ctx)
{
DPLANE_CTX_VALID(ctx);
return &(ctx->u.rule.new.dst_ip);
}
const struct prefix *
dplane_ctx_rule_get_old_dst_ip(const struct zebra_dplane_ctx *ctx)
{
DPLANE_CTX_VALID(ctx);
return &(ctx->u.rule.old.dst_ip);
}
/*
* End of dplane context accessors
*/
@ -2909,6 +3066,13 @@ int dplane_show_helper(struct vty *vty, bool detailed)
vty_out(vty, "EVPN neigh updates: %"PRIu64"\n", incoming);
vty_out(vty, "EVPN neigh errors: %"PRIu64"\n", errs);
incoming = atomic_load_explicit(&zdplane_info.dg_rules_in,
memory_order_relaxed);
errs = atomic_load_explicit(&zdplane_info.dg_rule_errors,
memory_order_relaxed);
vty_out(vty, "Rule updates: %" PRIu64 "\n", incoming);
vty_out(vty, "Rule errors: %" PRIu64 "\n", errs);
return CMD_SUCCESS;
}

26
zebra/zebra_dplane.h
View File

@ -144,6 +144,11 @@ enum dplane_op_e {
/* EVPN VTEP updates */
DPLANE_OP_VTEP_ADD,
DPLANE_OP_VTEP_DELETE,
/* Policy based routing rule update */
DPLANE_OP_RULE_ADD,
DPLANE_OP_RULE_DELETE,
DPLANE_OP_RULE_UPDATE,
};
/*
@ -384,6 +389,27 @@ const struct ethaddr *dplane_ctx_neigh_get_mac(
uint32_t dplane_ctx_neigh_get_flags(const struct zebra_dplane_ctx *ctx);
uint16_t dplane_ctx_neigh_get_state(const struct zebra_dplane_ctx *ctx);
/* Accessors for policy based routing rule information */
int dplane_ctx_rule_get_sock(const struct zebra_dplane_ctx *ctx);
int dplane_ctx_rule_get_unique(const struct zebra_dplane_ctx *ctx);
int dplane_ctx_rule_get_seq(const struct zebra_dplane_ctx *ctx);
uint32_t dplane_ctx_rule_get_priority(const struct zebra_dplane_ctx *ctx);
uint32_t dplane_ctx_rule_get_old_priority(const struct zebra_dplane_ctx *ctx);
uint32_t dplane_ctx_rule_get_table(const struct zebra_dplane_ctx *ctx);
uint32_t dplane_ctx_rule_get_old_table(const struct zebra_dplane_ctx *ctx);
uint32_t dplane_ctx_rule_get_filter_bm(const struct zebra_dplane_ctx *ctx);
uint32_t dplane_ctx_rule_get_old_filter_bm(const struct zebra_dplane_ctx *ctx);
uint32_t dplane_ctx_rule_get_fwmark(const struct zebra_dplane_ctx *ctx);
uint32_t dplane_ctx_rule_get_old_fwmark(const struct zebra_dplane_ctx *ctx);
const struct prefix *
dplane_ctx_rule_get_src_ip(const struct zebra_dplane_ctx *ctx);
const struct prefix *
dplane_ctx_rule_get_old_src_ip(const struct zebra_dplane_ctx *ctx);
const struct prefix *
dplane_ctx_rule_get_dst_ip(const struct zebra_dplane_ctx *ctx);
const struct prefix *
dplane_ctx_rule_get_old_dst_ip(const struct zebra_dplane_ctx *ctx);
/* Namespace info - esp. for netlink communication */
const struct zebra_dplane_info *dplane_ctx_get_ns(
const struct zebra_dplane_ctx *ctx);

3
zebra/zebra_nhg.c
View File

@ -2563,6 +2563,9 @@ void zebra_nhg_dplane_result(struct zebra_dplane_ctx *ctx)
case DPLANE_OP_NEIGH_DELETE:
case DPLANE_OP_VTEP_ADD:
case DPLANE_OP_VTEP_DELETE:
case DPLANE_OP_RULE_ADD:
case DPLANE_OP_RULE_DELETE:
case DPLANE_OP_RULE_UPDATE:
case DPLANE_OP_NONE:
break;
}