Re: [PATCH 09/17] net: ipv6: Incorporate IPv6 support into u-boot net subsystem

On Tue, Sep 6, 2022 at 6:10 PM Viacheslav Mitrofanov v.v.mitrofanov@yadro.com wrote:

Add net_ip6_handler (an IPv6 packet handler) into net_loop. Add neighbor discovery mechanism into network init process. That is the main step to run IPv6 in u-boot. Now u-boot is capable to use NDP and handle IPv6 packets.

Signed-off-by: Viacheslav Mitrofanov v.v.mitrofanov@yadro.com

net/net.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/net/net.c b/net/net.c index 81905f6315..f818170930 100644 --- a/net/net.c +++ b/net/net.c @@ -91,6 +91,8 @@ #include <image.h> #include <log.h> #include <net.h> +#include <net6.h> +#include <ndisc.h> #include <net/fastboot.h> #include <net/tftp.h> #if defined(CONFIG_CMD_PCAP) @@ -340,8 +342,17 @@ void net_auto_load(void)

static int net_init_loop(void) {

•   if (eth_get_dev())
  

•   if (eth_get_dev()) {
            memcpy(net_ethaddr, eth_get_ethaddr(), 6);
  

•           if (IS_ENABLED(CONFIG_IPV6)) {
  

•                   ip6_make_lladdr(&net_link_local_ip6, net_ethaddr);
  

•                   if (!memcmp(&net_ip6, &net_null_addr_ip6,
  

•                               sizeof(struct in6_addr)))
  

•                           memcpy(&net_ip6, &net_link_local_ip6,
  

•                                  sizeof(struct in6_addr));
  

•           }
  

•   }
    else
            /*
             * Not ideal, but there's no way to get the actual error, and I
  

@@ -382,6 +393,7 @@ int net_init(void) (i + 1) * PKTSIZE_ALIGN; } arp_init();

•           ndisc_init();
            net_clear_handlers();
  
            /* Only need to setup buffer pointers once. */
  

@@ -563,6 +575,10 @@ restart: if (arp_timeout_check() > 0) time_start = get_timer(0);

•           if (IS_ENABLED(CONFIG_IPV6)) {
  

•                   if (use_ip6 && (ndisc_timeout_check() > 0))
  

•                           time_start = get_timer(0);
  

•           }
            /*
             *      Check the ethernet for a new packet.  The ethernet
             *      receive routine will process it.
  

@@ -1187,6 +1203,11 @@ void net_process_received_packet(uchar *in_packet, int len) case PROT_RARP: rarp_receive(ip, len); break; +#endif +#if IS_ENABLED(CONFIG_IPV6)

•   case PROT_IP6:
  

•           net_ip6_handler(et, (struct ip6_hdr *)ip, len);
  

•           break;
  

#endif case PROT_IP: debug_cond(DEBUG_NET_PKT, "Got IP\n"); -- 2.25.1

Reviewed-by: Ramon Fried rfried.dev@gmail.com