int is_input, int is_l2_path, u32 * l2_feat_next_node_index,
vlib_node_registration_t * acl_fa_node)
{
- u32 n_left_from, *from, *to_next;
- acl_fa_next_t next_index;
+ u32 n_left, *from;
u32 pkts_acl_checked = 0;
u32 pkts_new_session = 0;
u32 pkts_exist_session = 0;
uword thread_index = os_get_thread_index ();
acl_fa_per_worker_data_t *pw = &am->per_worker_data[thread_index];
+ u16 nexts[VLIB_FRAME_SIZE], *next;
+ vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
+
from = vlib_frame_vector_args (frame);
- n_left_from = frame->n_vectors;
- next_index = node->cached_next_index;
error_node = vlib_node_get_runtime (vm, acl_fa_node->index);
- while (n_left_from > 0)
- {
- u32 n_left_to_next;
-
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- u32 bi0;
- vlib_buffer_t *b0;
- u32 next0 = 0;
- u8 action = 0;
- u32 sw_if_index0;
- u32 lc_index0;
- int acl_check_needed = 1;
- u32 match_acl_in_index = ~0;
- u32 match_acl_pos = ~0;
- u32 match_rule_index = ~0;
- u8 error0 = 0;
-
- /* speculatively enqueue b0 to the current next frame */
- bi0 = from[0];
- to_next[0] = bi0;
- from += 1;
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
-
- b0 = vlib_get_buffer (vm, bi0);
-
- if (is_input)
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- else
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+ vlib_get_buffers (vm, from, bufs, frame->n_vectors);
+ /* set the initial values for the current buffer the next pointers */
+ b = bufs;
+ next = nexts;
- if (is_input)
- lc_index0 = am->input_lc_index_by_sw_if_index[sw_if_index0];
- else
- lc_index0 = am->output_lc_index_by_sw_if_index[sw_if_index0];
-
- u32 **p_epoch_vec =
- is_input ? &am->input_policy_epoch_by_sw_if_index :
- &am->output_policy_epoch_by_sw_if_index;
- u16 current_policy_epoch =
- sw_if_index0 < vec_len (*p_epoch_vec) ? vec_elt (*p_epoch_vec,
- sw_if_index0)
- : (is_input * FA_POLICY_EPOCH_IS_INPUT);
- /*
- * Extract the L3/L4 matching info into a 5-tuple structure.
- */
-
- acl_plugin_fill_5tuple_inline (lc_index0, b0, is_ip6, is_input,
- is_l2_path,
- (fa_5tuple_opaque_t *) & fa_5tuple);
- fa_5tuple.l4.lsb_of_sw_if_index = sw_if_index0 & 0xffff;
- fa_5tuple.pkt.mask_type_index_lsb = ~0;
+ n_left = frame->n_vectors;
+ while (n_left > 0)
+ {
+ u32 next0 = 0;
+ u8 action = 0;
+ u32 sw_if_index0;
+ u32 lc_index0 = ~0;
+ int acl_check_needed = 1;
+ u32 match_acl_in_index = ~0;
+ u32 match_acl_pos = ~0;
+ u32 match_rule_index = ~0;
+ u8 error0 = 0;
+
+ n_left -= 1;
+
+ if (is_input)
+ sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_RX];
+ else
+ sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_TX];
+
+ if (is_input)
+ lc_index0 = am->input_lc_index_by_sw_if_index[sw_if_index0];
+ else
+ lc_index0 = am->output_lc_index_by_sw_if_index[sw_if_index0];
+
+
+ u32 **p_epoch_vec =
+ is_input ? &am->input_policy_epoch_by_sw_if_index :
+ &am->output_policy_epoch_by_sw_if_index;
+ u16 current_policy_epoch =
+ sw_if_index0 < vec_len (*p_epoch_vec) ? vec_elt (*p_epoch_vec,
+ sw_if_index0)
+ : (is_input * FA_POLICY_EPOCH_IS_INPUT);
+ /*
+ * Extract the L3/L4 matching info into a 5-tuple structure.
+ */
+
+ acl_plugin_fill_5tuple_inline (lc_index0, b[0], is_ip6, is_input,
+ is_l2_path,
+ (fa_5tuple_opaque_t *) & fa_5tuple);
+ fa_5tuple.l4.lsb_of_sw_if_index = sw_if_index0 & 0xffff;
+ fa_5tuple.pkt.mask_type_index_lsb = ~0;
#ifdef FA_NODE_VERBOSE_DEBUG
- clib_warning
- ("ACL_FA_NODE_DBG: packet 5-tuple %016llx %016llx %016llx %016llx %016llx %016llx",
- fa_5tuple.kv.key[0], fa_5tuple.kv.key[1], fa_5tuple.kv.key[2],
- fa_5tuple.kv.key[3], fa_5tuple.kv.key[4], fa_5tuple.kv.value);
+ clib_warning
+ ("ACL_FA_NODE_DBG: packet 5-tuple %016llx %016llx %016llx %016llx %016llx %016llx",
+ fa_5tuple.kv.key[0], fa_5tuple.kv.key[1], fa_5tuple.kv.key[2],
+ fa_5tuple.kv.key[3], fa_5tuple.kv.key[4], fa_5tuple.kv.value);
#endif
- /* Try to match an existing session first */
+ /* Try to match an existing session first */
- if (acl_fa_ifc_has_sessions (am, sw_if_index0))
+ if (acl_fa_ifc_has_sessions (am, sw_if_index0))
+ {
+ if (acl_fa_find_session (am, sw_if_index0, &fa_5tuple, &value_sess))
{
- if (acl_fa_find_session
- (am, sw_if_index0, &fa_5tuple, &value_sess))
+ trace_bitmap |= 0x80000000;
+ error0 = ACL_FA_ERROR_ACL_EXIST_SESSION;
+ fa_full_session_id_t f_sess_id;
+
+ f_sess_id.as_u64 = value_sess.value;
+ ASSERT (f_sess_id.thread_index < vec_len (vlib_mains));
+
+ fa_session_t *sess =
+ get_session_ptr (am, f_sess_id.thread_index,
+ f_sess_id.session_index);
+ int old_timeout_type = fa_session_get_timeout_type (am, sess);
+ action =
+ acl_fa_track_session (am, is_input, sw_if_index0, now,
+ sess, &fa_5tuple);
+ /* expose the session id to the tracer */
+ match_rule_index = f_sess_id.session_index;
+ int new_timeout_type = fa_session_get_timeout_type (am, sess);
+ acl_check_needed = 0;
+ pkts_exist_session += 1;
+ /* Tracking might have changed the session timeout type, e.g. from transient to established */
+ if (PREDICT_FALSE (old_timeout_type != new_timeout_type))
{
- trace_bitmap |= 0x80000000;
- error0 = ACL_FA_ERROR_ACL_EXIST_SESSION;
- fa_full_session_id_t f_sess_id;
-
- f_sess_id.as_u64 = value_sess.value;
- ASSERT (f_sess_id.thread_index < vec_len (vlib_mains));
-
- fa_session_t *sess =
- get_session_ptr (am, f_sess_id.thread_index,
- f_sess_id.session_index);
- int old_timeout_type =
- fa_session_get_timeout_type (am, sess);
- action =
- acl_fa_track_session (am, is_input, sw_if_index0, now,
- sess, &fa_5tuple);
- /* expose the session id to the tracer */
- match_rule_index = f_sess_id.session_index;
- int new_timeout_type =
- fa_session_get_timeout_type (am, sess);
+ acl_fa_restart_timer_for_session (am, now, f_sess_id);
+ pkts_restart_session_timer++;
+ trace_bitmap |=
+ 0x00010000 + ((0xff & old_timeout_type) << 8) +
+ (0xff & new_timeout_type);
+ }
+ /*
+ * I estimate the likelihood to be very low - the VPP needs
+ * to have >64K interfaces to start with and then on
+ * exactly 64K indices apart needs to be exactly the same
+ * 5-tuple... Anyway, since this probability is nonzero -
+ * print an error and drop the unlucky packet.
+ * If this shows up in real world, we would need to bump
+ * the hash key length.
+ */
+ if (PREDICT_FALSE (sess->sw_if_index != sw_if_index0))
+ {
+ clib_warning
+ ("BUG: session LSB16(sw_if_index) and 5-tuple collision!");
acl_check_needed = 0;
- pkts_exist_session += 1;
- /* Tracking might have changed the session timeout type, e.g. from transient to established */
- if (PREDICT_FALSE (old_timeout_type != new_timeout_type))
- {
- acl_fa_restart_timer_for_session (am, now, f_sess_id);
- pkts_restart_session_timer++;
- trace_bitmap |=
- 0x00010000 + ((0xff & old_timeout_type) << 8) +
- (0xff & new_timeout_type);
- }
- /*
- * I estimate the likelihood to be very low - the VPP needs
- * to have >64K interfaces to start with and then on
- * exactly 64K indices apart needs to be exactly the same
- * 5-tuple... Anyway, since this probability is nonzero -
- * print an error and drop the unlucky packet.
- * If this shows up in real world, we would need to bump
- * the hash key length.
- */
- if (PREDICT_FALSE (sess->sw_if_index != sw_if_index0))
- {
- clib_warning
- ("BUG: session LSB16(sw_if_index) and 5-tuple collision!");
- acl_check_needed = 0;
- action = 0;
- }
- if (PREDICT_FALSE (am->reclassify_sessions))
+ action = 0;
+ }
+ if (PREDICT_FALSE (am->reclassify_sessions))
+ {
+ /* if the MSB of policy epoch matches but not the LSB means it is a stale session */
+ if ((0 ==
+ ((current_policy_epoch ^
+ f_sess_id.intf_policy_epoch) &
+ FA_POLICY_EPOCH_IS_INPUT))
+ && (current_policy_epoch !=
+ f_sess_id.intf_policy_epoch))
{
- /* if the MSB of policy epoch matches but not the LSB means it is a stale session */
- if ((0 ==
- ((current_policy_epoch ^
- f_sess_id.intf_policy_epoch) &
- FA_POLICY_EPOCH_IS_INPUT))
- && (current_policy_epoch !=
- f_sess_id.intf_policy_epoch))
+ /* delete session and increment the counter */
+ vec_validate
+ (pw->fa_session_epoch_change_by_sw_if_index,
+ sw_if_index0);
+ vec_elt (pw->fa_session_epoch_change_by_sw_if_index,
+ sw_if_index0)++;
+ if (acl_fa_conn_list_delete_session (am, f_sess_id))
{
- /* delete session and increment the counter */
- vec_validate
- (pw->fa_session_epoch_change_by_sw_if_index,
- sw_if_index0);
- vec_elt (pw->fa_session_epoch_change_by_sw_if_index,
- sw_if_index0)++;
- if (acl_fa_conn_list_delete_session (am, f_sess_id))
- {
- /* delete the session only if we were able to unlink it */
- acl_fa_delete_session (am, sw_if_index0,
- f_sess_id);
- }
- acl_check_needed = 1;
- trace_bitmap |= 0x40000000;
+ /* delete the session only if we were able to unlink it */
+ acl_fa_delete_session (am, sw_if_index0, f_sess_id);
}
+ acl_check_needed = 1;
+ trace_bitmap |= 0x40000000;
}
}
}
+ }
- if (acl_check_needed)
+ if (acl_check_needed)
+ {
+ action = 0; /* deny by default */
+ acl_plugin_match_5tuple_inline (lc_index0,
+ (fa_5tuple_opaque_t *) &
+ fa_5tuple, is_ip6, &action,
+ &match_acl_pos,
+ &match_acl_in_index,
+ &match_rule_index, &trace_bitmap);
+ error0 = action;
+ if (1 == action)
+ pkts_acl_permit += 1;
+ if (2 == action)
{
- action = 0; /* deny by default */
- acl_plugin_match_5tuple_inline (lc_index0,
- (fa_5tuple_opaque_t *) &
- fa_5tuple, is_ip6, &action,
- &match_acl_pos,
- &match_acl_in_index,
- &match_rule_index,
- &trace_bitmap);
- error0 = action;
- if (1 == action)
- pkts_acl_permit += 1;
- if (2 == action)
- {
- if (!acl_fa_can_add_session (am, is_input, sw_if_index0))
- acl_fa_try_recycle_session (am, is_input, thread_index,
- sw_if_index0);
+ if (!acl_fa_can_add_session (am, is_input, sw_if_index0))
+ acl_fa_try_recycle_session (am, is_input, thread_index,
+ sw_if_index0);
- if (acl_fa_can_add_session (am, is_input, sw_if_index0))
- {
- fa_session_t *sess =
- acl_fa_add_session (am, is_input, is_ip6,
- sw_if_index0,
- now, &fa_5tuple,
- current_policy_epoch);
- acl_fa_track_session (am, is_input, sw_if_index0,
- now, sess, &fa_5tuple);
- pkts_new_session += 1;
- }
- else
- {
- action = 0;
- error0 = ACL_FA_ERROR_ACL_TOO_MANY_SESSIONS;
- }
+ if (acl_fa_can_add_session (am, is_input, sw_if_index0))
+ {
+ fa_session_t *sess =
+ acl_fa_add_session (am, is_input, is_ip6,
+ sw_if_index0,
+ now, &fa_5tuple,
+ current_policy_epoch);
+ acl_fa_track_session (am, is_input, sw_if_index0,
+ now, sess, &fa_5tuple);
+ pkts_new_session += 1;
+ }
+ else
+ {
+ action = 0;
+ error0 = ACL_FA_ERROR_ACL_TOO_MANY_SESSIONS;
}
}
+ }
- if (action > 0)
- {
- if (is_l2_path)
- next0 = vnet_l2_feature_next (b0, l2_feat_next_node_index, 0);
- else
- vnet_feature_next (sw_if_index0, &next0, b0);
- }
+ if (action > 0)
+ {
+ if (is_l2_path)
+ next0 = vnet_l2_feature_next (b[0], l2_feat_next_node_index, 0);
+ else
+ vnet_feature_next (sw_if_index0, &next0, b[0]);
+ }
#ifdef FA_NODE_VERBOSE_DEBUG
- clib_warning
- ("ACL_FA_NODE_DBG: sw_if_index %d lc_index %d action %d acl_index %d rule_index %d",
- sw_if_index0, lc_index0, action, match_acl_in_index,
- match_rule_index);
+ clib_warning
+ ("ACL_FA_NODE_DBG: sw_if_index %d lc_index %d action %d acl_index %d rule_index %d",
+ sw_if_index0, lc_index0, action, match_acl_in_index,
+ match_rule_index);
#endif
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- acl_fa_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- t->lc_index = lc_index0;
- t->next_index = next0;
- t->match_acl_in_index = match_acl_in_index;
- t->match_rule_index = match_rule_index;
- t->packet_info[0] = fa_5tuple.kv.key[0];
- t->packet_info[1] = fa_5tuple.kv.key[1];
- t->packet_info[2] = fa_5tuple.kv.key[2];
- t->packet_info[3] = fa_5tuple.kv.key[3];
- t->packet_info[4] = fa_5tuple.kv.key[4];
- t->packet_info[5] = fa_5tuple.kv.value;
- t->action = action;
- t->trace_bitmap = trace_bitmap;
- }
-
- next0 = next0 < node->n_next_nodes ? next0 : 0;
- if (0 == next0)
- b0->error = error_node->errors[error0];
-
- pkts_acl_checked += 1;
-
- /* verify speculative enqueue, maybe switch current next frame */
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
- to_next, n_left_to_next, bi0,
- next0);
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b[0]->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ acl_fa_trace_t *t = vlib_add_trace (vm, node, b[0], sizeof (*t));
+ t->sw_if_index = sw_if_index0;
+ t->lc_index = lc_index0;
+ t->next_index = next0;
+ t->match_acl_in_index = match_acl_in_index;
+ t->match_rule_index = match_rule_index;
+ t->packet_info[0] = fa_5tuple.kv.key[0];
+ t->packet_info[1] = fa_5tuple.kv.key[1];
+ t->packet_info[2] = fa_5tuple.kv.key[2];
+ t->packet_info[3] = fa_5tuple.kv.key[3];
+ t->packet_info[4] = fa_5tuple.kv.key[4];
+ t->packet_info[5] = fa_5tuple.kv.value;
+ t->action = action;
+ t->trace_bitmap = trace_bitmap;
}
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ next0 = next0 < node->n_next_nodes ? next0 : 0;
+ if (0 == next0)
+ b[0]->error = error_node->errors[error0];
+ next[0] = next0;
+
+ next++;
+ b++;
+ pkts_acl_checked += 1;
}
+ vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
+
vlib_node_increment_counter (vm, acl_fa_node->index,
ACL_FA_ERROR_ACL_CHECK, pkts_acl_checked);
vlib_node_increment_counter (vm, acl_fa_node->index,
Code Review / vpp.git / commitdiff