static int
S_render_node(cmark_renderer *renderer,
cmark_node *node,
cmark_event_type ev_type,
int options)
{
int list_number;
char list_number_string[20];
bool entering = (ev_type == CMARK_EVENT_ENTER);
cmark_list_type list_type;
const char* roman_numerals[] = { "", "i", "ii", "iii", "iv", "v",
"vi", "vii", "viii", "ix", "x"
};
// avoid warning about unused parameter:
(void)(options);
switch (node->type) {
case CMARK_NODE_DOCUMENT:
break;
case CMARK_NODE_BLOCK_QUOTE:
if (entering) {
LIT("\\begin{quote}");
CR();
} else {
LIT("\\end{quote}");
BLANKLINE();
}
break;
case CMARK_NODE_LIST:
list_type = cmark_node_get_list_type(node);
if (entering) {
LIT("\\begin{");
LIT(list_type == CMARK_ORDERED_LIST ?
"enumerate" : "itemize");
LIT("}");
CR();
list_number = cmark_node_get_list_start(node);
if (list_number > 1) {
sprintf(list_number_string,
"%d", list_number);
LIT("\\setcounter{enum");
LIT((char *)roman_numerals[S_get_enumlevel(node)]);
LIT("}{");
OUT(list_number_string, false, NORMAL);
LIT("}");
CR();
}
} else {
LIT("\\end{");
LIT(list_type == CMARK_ORDERED_LIST ?
"enumerate" : "itemize");
LIT("}");
BLANKLINE();
}
break;
case CMARK_NODE_ITEM:
if (entering) {
LIT("\\item ");
} else {
CR();
}
break;
case CMARK_NODE_HEADER:
if (entering) {
switch (cmark_node_get_header_level(node)) {
case 1:
LIT("\\section");
break;
case 2:
LIT("\\subsection");
break;
case 3:
LIT("\\subsubsection");
break;
case 4:
LIT("\\paragraph");
break;
case 5:
LIT("\\subparagraph");
break;
}
LIT("{");
} else {
LIT("}");
BLANKLINE();
}
break;
case CMARK_NODE_CODE_BLOCK:
CR();
LIT("\\begin{verbatim}");
CR();
OUT(cmark_node_get_literal(node), false, LITERAL);
CR();
LIT("\\end{verbatim}");
BLANKLINE();
break;
case CMARK_NODE_HTML:
break;
case CMARK_NODE_HRULE:
BLANKLINE();
LIT("\\begin{center}\\rule{0.5\\linewidth}{\\linethickness}\\end{center}");
BLANKLINE();
break;
case CMARK_NODE_PARAGRAPH:
if (!entering) {
BLANKLINE();
}
break;
case CMARK_NODE_TEXT:
OUT(cmark_node_get_literal(node), true, NORMAL);
break;
case CMARK_NODE_LINEBREAK:
LIT("\\\\");
CR();
break;
case CMARK_NODE_SOFTBREAK:
if (renderer->width == 0) {
CR();
} else {
OUT(" ", true, NORMAL);
}
break;
case CMARK_NODE_CODE:
LIT("\\texttt{");
OUT(cmark_node_get_literal(node), false, NORMAL);
LIT("}");
break;
case CMARK_NODE_INLINE_HTML:
break;
case CMARK_NODE_STRONG:
if (entering) {
LIT("\\textbf{");
} else {
LIT("}");
}
break;
case CMARK_NODE_EMPH:
if (entering) {
LIT("\\emph{");
} else {
LIT("}");
}
break;
case CMARK_NODE_LINK:
if (entering) {
const char* url = cmark_node_get_url(node);
// requires \usepackage{hyperref}
switch(get_link_type(node)) {
case URL_AUTOLINK:
LIT("\\url{");
OUT(url, false, URL);
break;
case EMAIL_AUTOLINK:
LIT("\\href{");
OUT(url, false, URL);
LIT("}\\nolinkurl{");
break;
case NORMAL_LINK:
LIT("\\href{");
OUT(url, false, URL);
LIT("}{");
break;
case NO_LINK:
LIT("{"); // error?
}
} else {
LIT("}");
}
break;
case CMARK_NODE_IMAGE:
if (entering) {
LIT("\\protect\\includegraphics{");
// requires \include{graphicx}
OUT(cmark_node_get_url(node), false, URL);
LIT("}");
return 0;
}
break;
default:
assert(false);
break;
}
return 1;
}
static int S_render_node(cmark_renderer *renderer, cmark_node *node,
cmark_event_type ev_type, int options) {
int list_number;
int enumlevel;
char list_number_string[LIST_NUMBER_STRING_SIZE];
bool entering = (ev_type == CMARK_EVENT_ENTER);
cmark_list_type list_type;
bool allow_wrap = renderer->width > 0 && !(CMARK_OPT_NOBREAKS & options);
// avoid warning about unused parameter:
(void)(options);
switch (node->type) {
case CMARK_NODE_DOCUMENT:
break;
case CMARK_NODE_BLOCK_QUOTE:
if (entering) {
LIT("\\begin{quote}");
CR();
} else {
LIT("\\end{quote}");
BLANKLINE();
}
break;
case CMARK_NODE_LIST:
list_type = cmark_node_get_list_type(node);
if (entering) {
LIT("\\begin{");
LIT(list_type == CMARK_ORDERED_LIST ? "enumerate" : "itemize");
LIT("}");
CR();
list_number = cmark_node_get_list_start(node);
if (list_number > 1) {
enumlevel = S_get_enumlevel(node);
// latex normally supports only five levels
if (enumlevel >= 1 && enumlevel <= 5) {
snprintf(list_number_string, LIST_NUMBER_STRING_SIZE, "%d",
list_number);
LIT("\\setcounter{enum");
switch(enumlevel) {
case 1: LIT("i"); break;
case 2: LIT("ii"); break;
case 3: LIT("iii"); break;
case 4: LIT("iv"); break;
case 5: LIT("v"); break;
default: LIT("i"); break;
}
LIT("}{");
OUT(list_number_string, false, NORMAL);
LIT("}");
}
CR();
}
} else {
LIT("\\end{");
LIT(list_type == CMARK_ORDERED_LIST ? "enumerate" : "itemize");
LIT("}");
BLANKLINE();
}
break;
case CMARK_NODE_ITEM:
if (entering) {
LIT("\\item ");
} else {
CR();
}
break;
case CMARK_NODE_HEADING:
if (entering) {
switch (cmark_node_get_heading_level(node)) {
case 1:
LIT("\\section");
break;
case 2:
LIT("\\subsection");
break;
case 3:
LIT("\\subsubsection");
break;
case 4:
LIT("\\paragraph");
break;
case 5:
LIT("\\subparagraph");
break;
}
LIT("{");
} else {
LIT("}");
BLANKLINE();
}
break;
case CMARK_NODE_CODE_BLOCK:
CR();
LIT("\\begin{verbatim}");
CR();
OUT(cmark_node_get_literal(node), false, LITERAL);
CR();
LIT("\\end{verbatim}");
BLANKLINE();
break;
case CMARK_NODE_HTML_BLOCK:
break;
case CMARK_NODE_CUSTOM_BLOCK:
CR();
OUT(entering ? cmark_node_get_on_enter(node) : cmark_node_get_on_exit(node),
false, LITERAL);
CR();
break;
case CMARK_NODE_THEMATIC_BREAK:
BLANKLINE();
LIT("\\begin{center}\\rule{0.5\\linewidth}{\\linethickness}\\end{center}");
BLANKLINE();
break;
case CMARK_NODE_PARAGRAPH:
if (!entering) {
BLANKLINE();
}
break;
case CMARK_NODE_TEXT:
OUT(cmark_node_get_literal(node), allow_wrap, NORMAL);
break;
case CMARK_NODE_LINEBREAK:
LIT("\\\\");
CR();
break;
case CMARK_NODE_SOFTBREAK:
if (options & CMARK_OPT_HARDBREAKS) {
LIT("\\\\");
CR();
} else if (renderer->width == 0 && !(CMARK_OPT_NOBREAKS & options)) {
CR();
} else {
OUT(" ", allow_wrap, NORMAL);
}
break;
case CMARK_NODE_CODE:
LIT("\\texttt{");
OUT(cmark_node_get_literal(node), false, NORMAL);
LIT("}");
break;
case CMARK_NODE_HTML_INLINE:
break;
case CMARK_NODE_CUSTOM_INLINE:
OUT(entering ? cmark_node_get_on_enter(node) : cmark_node_get_on_exit(node),
false, LITERAL);
break;
case CMARK_NODE_STRONG:
if (entering) {
LIT("\\textbf{");
} else {
LIT("}");
}
break;
case CMARK_NODE_EMPH:
if (entering) {
LIT("\\emph{");
} else {
LIT("}");
}
break;
case CMARK_NODE_LINK:
if (entering) {
const char *url = cmark_node_get_url(node);
// requires \usepackage{hyperref}
switch (get_link_type(node)) {
case URL_AUTOLINK:
LIT("\\url{");
OUT(url, false, URL);
LIT("}");
return 0; // Don't process further nodes to avoid double-rendering artefacts
case EMAIL_AUTOLINK:
LIT("\\href{");
OUT(url, false, URL);
LIT("}\\nolinkurl{");
break;
case NORMAL_LINK:
LIT("\\href{");
OUT(url, false, URL);
LIT("}{");
break;
case INTERNAL_LINK:
LIT("\\protect\\hyperlink{");
OUT(url + 1, false, URL);
LIT("}{");
break;
case NO_LINK:
LIT("{"); // error?
}
} else {
LIT("}");
}
break;
case CMARK_NODE_IMAGE:
if (entering) {
LIT("\\protect\\includegraphics{");
// requires \include{graphicx}
OUT(cmark_node_get_url(node), false, URL);
LIT("}");
return 0;
}
break;
default:
assert(false);
break;
}
return 1;
}
void nl_bridge::update_vlans(rtnl_link *old_link, rtnl_link *new_link) {
assert(sw);
assert(bridge); // already checked
rtnl_link_bridge_vlan *old_br_vlan, *new_br_vlan;
rtnl_link *_link;
if (old_link == nullptr) {
// link added
old_br_vlan = &empty_br_vlan;
new_br_vlan = rtnl_link_bridge_get_port_vlan(new_link);
_link = nl->get_link(rtnl_link_get_ifindex(new_link), AF_UNSPEC);
} else if (new_link == nullptr) {
// link deleted
old_br_vlan = rtnl_link_bridge_get_port_vlan(old_link);
new_br_vlan = &empty_br_vlan;
_link = nl->get_link(rtnl_link_get_ifindex(old_link), AF_UNSPEC);
} else {
// link updated
old_br_vlan = rtnl_link_bridge_get_port_vlan(old_link);
new_br_vlan = rtnl_link_bridge_get_port_vlan(new_link);
_link = nl->get_link(rtnl_link_get_ifindex(new_link), AF_UNSPEC);
}
if (old_br_vlan == nullptr) {
old_br_vlan = &empty_br_vlan;
}
if (new_br_vlan == nullptr) {
new_br_vlan = &empty_br_vlan;
}
if (_link == nullptr) {
// XXX FIXME in case a vxlan has been deleted the vxlan_domain and
// vxlan_dom_bitmap need an update, maybe this can be handled already from
// the link_deleted of the vxlan itself?
LOG(WARNING) << __FUNCTION__
<< ": could not get parent link of bridge interface. This "
"case needs further checks if everything got already "
"deleted.";
return;
}
// check for vid changes
if (br_vlan_equal(old_br_vlan, new_br_vlan)) {
VLOG(2) << __FUNCTION__ << ": vlans did not change";
return;
}
link_type lt = get_link_type(_link);
uint32_t pport_no = 0;
uint32_t tunnel_id = -1;
std::deque<rtnl_link *> bridge_ports;
if (lt == LT_VXLAN) {
assert(nl);
nl->get_bridge_ports(rtnl_link_get_master(_link), &bridge_ports);
if (vxlan->get_tunnel_id(_link, nullptr, &tunnel_id) != 0) {
LOG(ERROR) << __FUNCTION__ << ": failed to get vni of link "
<< OBJ_CAST(_link);
}
} else {
pport_no = nl->get_port_id(rtnl_link_get_ifindex(_link));
if (pport_no == 0) {
LOG(ERROR) << __FUNCTION__
<< ": invalid pport_no=0 of link: " << OBJ_CAST(_link);
return;
}
}
for (int k = 0; k < RTNL_LINK_BRIDGE_VLAN_BITMAP_LEN; k++) {
int base_bit;
uint32_t a = old_br_vlan->vlan_bitmap[k];
uint32_t b = new_br_vlan->vlan_bitmap[k];
uint32_t vlan_diff = a ^ b;
#if 0 // untagged change not yet implemented
uint32_t c = old_br_vlan->untagged_bitmap[k];
uint32_t d = new_br_vlan->untagged_bitmap[k];
uint32_t untagged_diff = c ^ d;
#endif // 0
base_bit = k * 32;
int i = -1;
int done = 0;
while (!done) {
int j = find_next_bit(i, vlan_diff);
if (j > 0) {
// vlan added or removed
int vid = j - 1 + base_bit;
bool egress_untagged = false;
// check if egress is untagged
if (new_br_vlan->untagged_bitmap[k] & 1 << (j - 1)) {
egress_untagged = true;
#if 0 // untagged change not yet implemented
// clear untagged_diff bit
untagged_diff &= ~((uint32_t)1 << (j - 1));
#endif // 0
}
if (new_br_vlan->vlan_bitmap[k] & 1 << (j - 1)) {
// vlan added
if (lt == LT_VXLAN) {
// update vxlan domain
if (!is_vid_set(vid, vxlan_dom_bitmap)) {
VLOG(1) << __FUNCTION__ << ": new vxlan domain vid=" << vid
<< ", tunnel_id=" << tunnel_id;
vxlan_domain.emplace(vid, tunnel_id);
set_vid(vid, vxlan_dom_bitmap);
} else {
// XXX TODO check the map
}
// update all bridge ports to be access ports
update_access_ports(_link, new_link ? new_link : old_link, vid,
tunnel_id, bridge_ports, true);
} else {
assert(pport_no);
if (is_vid_set(vid, vxlan_dom_bitmap)) {
// configure as access port
std::string port_name = std::string(rtnl_link_get_name(_link));
auto vxd_it = vxlan_domain.find(vid);
if (vxd_it != vxlan_domain.end()) {
vxlan->create_access_port((new_link) ? new_link : old_link,
vxd_it->second, port_name, pport_no,
vid, egress_untagged, nullptr);
} else {
LOG(FATAL) << __FUNCTION__
<< ": should not happen, something is broken";
}
} else {
// normal vlan port
VLOG(3) << __FUNCTION__ << ": add vid=" << vid
<< " on pport_no=" << pport_no
<< " link: " << OBJ_CAST(_link);
sw->egress_bridge_port_vlan_add(pport_no, vid, egress_untagged);
sw->ingress_port_vlan_add(pport_no, vid,
new_br_vlan->pvid == vid);
}
}
} else {
// vlan removed
if (lt == LT_VXLAN) {
unset_vid(vid, vxlan_dom_bitmap);
vxlan_domain.erase(vid);
// update all bridge ports to be normal bridge ports
update_access_ports(_link, new_link ? new_link : old_link, vid,
tunnel_id, bridge_ports, false);
} else {
VLOG(3) << __FUNCTION__ << ": remove vid=" << vid
<< " on pport_no=" << pport_no
<< " link: " << OBJ_CAST(_link);
sw->ingress_port_vlan_remove(pport_no, vid,
old_br_vlan->pvid == vid);
// delete all FM pointing to this group first
sw->l2_addr_remove_all_in_vlan(pport_no, vid);
std::unique_ptr<rtnl_neigh, decltype(&rtnl_neigh_put)> filter(
rtnl_neigh_alloc(), rtnl_neigh_put);
rtnl_neigh_set_ifindex(filter.get(), rtnl_link_get_ifindex(bridge));
rtnl_neigh_set_master(filter.get(), rtnl_link_get_master(bridge));
rtnl_neigh_set_family(filter.get(), AF_BRIDGE);
rtnl_neigh_set_vlan(filter.get(), vid);
rtnl_neigh_set_flags(filter.get(), NTF_MASTER | NTF_EXT_LEARNED);
rtnl_neigh_set_state(filter.get(), NUD_REACHABLE);
nl_cache_foreach_filter(l2_cache.get(), OBJ_CAST(filter.get()),
[](struct nl_object *o, void *arg) {
VLOG(3) << "l2_cache remove object " << o;
nl_cache_remove(o);
},
nullptr);
sw->egress_bridge_port_vlan_remove(pport_no, vid);
}
}
i = j;
} else {
done = 1;
}
}
#if 0 // not yet implemented the update
done = 0;
i = -1;
while (!done) {
// vlan is existing, but swapping egress tagged/untagged
int j = find_next_bit(i, untagged_diff);
if (j > 0) {
// egress untagged changed
int vid = j - 1 + base_bit;
bool egress_untagged = false;
// check if egress is untagged
if (new_br_vlan->untagged_bitmap[k] & 1 << (j-1)) {
egress_untagged = true;
}
// XXX implement update
fm_driver.update_port_vid_egress(devname, vid, egress_untagged);
i = j;
} else {
done = 1;
}
}
#endif
}
}
