diff --git a/src/include/gpxe/iscsi.h b/src/include/gpxe/iscsi.h index 8a264a27..2961a96c 100644 --- a/src/include/gpxe/iscsi.h +++ b/src/include/gpxe/iscsi.h @@ -221,6 +221,12 @@ struct iscsi_bhs_login_response { /** Login response opcode */ #define ISCSI_OPCODE_LOGIN_RESPONSE 0x23 +/* Login response status codes */ +#define ISCSI_STATUS_SUCCESS 0x00 +#define ISCSI_STATUS_REDIRECT 0x01 +#define ISCSI_STATUS_INITIATOR_ERROR 0x02 +#define ISCSI_STATUS_TARGET_ERROR 0x03 + /** * iSCSI SCSI command basic header segment * diff --git a/src/net/tcp/iscsi.c b/src/net/tcp/iscsi.c index ae198c4e..31d5a1b9 100644 --- a/src/net/tcp/iscsi.c +++ b/src/net/tcp/iscsi.c @@ -505,6 +505,27 @@ static void iscsi_tx_login_request ( struct iscsi_session *iscsi, len - iscsi->tx_offset ); } +/** + * Handle iSCSI TargetAddress text value + * + * @v iscsi iSCSI session + * @v value TargetAddress value + */ +static void iscsi_handle_targetaddress_value ( struct iscsi_session *iscsi, + const char *value ) { + struct in_addr address; + struct sockaddr_in *sin = ( struct sockaddr_in * ) &iscsi->tcp.peer; + + if ( inet_aton ( value, &address ) == 0 ) { + DBG ( "iSCSI %p received invalid TargetAddress \"%s\"\n", + iscsi, value ); + return; + } + + DBG ( "iSCSI %p will redirect to %s\n", iscsi, value ); + sin->sin_addr = address; +} + /** * Handle iSCSI AuthMethod text value * @@ -629,6 +650,7 @@ struct iscsi_string_type { /** iSCSI text strings that we want to handle */ struct iscsi_string_type iscsi_string_types[] = { + { "TargetAddress=", iscsi_handle_targetaddress_value }, { "AuthMethod=", iscsi_handle_authmethod_value }, { "CHAP_A=", iscsi_handle_chap_a_value }, { "CHAP_I=", iscsi_handle_chap_i_value }, @@ -710,6 +732,14 @@ static void iscsi_rx_login_response ( struct iscsi_session *iscsi, void *data, iscsi_handle_strings ( iscsi, iscsi->rx_buffer, iscsi->rx_len ); iscsi_rx_buffered_data_done ( iscsi ); + /* Check for login redirection */ + if ( response->status_class == ISCSI_STATUS_REDIRECT ) { + DBG ( "iSCSI %p redirecting to new server\n", iscsi ); + iscsi_close ( iscsi, -EINPROGRESS ); + tcp_connect ( &iscsi->tcp ); + return; + } + /* Check for fatal errors */ if ( response->status_class != 0 ) { printf ( "iSCSI login failure: class %02x detail %02x\n",